Se sei uno sviluppatore con un dispositivo Google Pixel supportato, puoi aggiornarlo manualmente all'ultima build per test e sviluppo. Il flashing di un'immagine di fabbrica richiede un ripristino completo del dispositivo, quindi assicurati di eseguire prima il backup dei dati. Le build sono disponibili per i seguenti dispositivi Pixel:
- Pixel 6 e 6 Pro
- Pixel 6a
- Pixel 7 e 7 Pro
- Pixel 7a
- Pixel Fold
- Pixel Tablet
- Pixel 8 e 8 Pro
- Pixel 8a
- Pixel 9, 9 Pro, 9 Pro XL e 9 Pro Fold
- Pixel 9a
Utilizza i seguenti link e istruzioni per aggiornare il dispositivo supportato all'ultima build. Consulta la sezione Ottenere le build beta di Android 16 QPR per altri modi per ottenere QPR1 per test e sviluppo.
Eseguire il flashing del dispositivo utilizzando Android Flash Tool
Android Flash Tool ti consente di eseguire il flashing in modo sicuro di un'immagine di sistema sul tuo dispositivo Pixel supportato. Android Flash Tool funziona con qualsiasi browser web che supporti WebUSB, come Chrome o Edge 79 e versioni successive.
Android Flash Tool ti guida passo passo nella procedura di flashing del tuo dispositivo. Non è necessario installare strumenti, ma devi sbloccare il dispositivo e attivare il debug USB nelle opzioni sviluppatore. Per istruzioni complete, consulta la documentazione di Android Flash Tool.
Collega il dispositivo tramite USB, quindi vai ad Android Flash Tool utilizzando il seguente link e segui le istruzioni sullo schermo: https://flash.android.com/preview/baklava-qpr1-beta3.
Eseguire il flashing del dispositivo manualmente
Puoi anche scaricare l'ultima immagine di sistema ed eseguirne il flashing manualmente sul tuo dispositivo. Consulta la tabella seguente per scaricare l'immagine di sistema per il tuo dispositivo di test. Il flashing manuale di un dispositivo è utile se hai bisogno di un controllo preciso sull'ambiente di test o se devi eseguire reinstallazioni frequenti, ad esempio quando esegui test automatizzati.
Dopo aver eseguito il backup dei dati del dispositivo e scaricato l'immagine di sistema corrispondente, puoi flashare l'immagine sul dispositivo.
Puoi scegliere di tornare all'ultima build pubblica in qualsiasi momento.
Immagini del produttore del dispositivo
| Data di uscita | 17 luglio 2025 |
| Build | BP31.250610.004 BP31.250610.004.A1 (Pixel 6, 6 Pro) |
| Supporto dell'emulatore | x86 (64 bit), ARM (v8-A) |
| Livello patch di sicurezza | Luglio 2025 |
| Google Play Services | 25.20.39 |
| Dispositivo | Link per il download e checksum SHA-256 |
|---|---|
| Pixel 6 |
4b6e2632483062dac1dc46830dab6b714c50564c6bb7e43e8606a13fde8673a4 |
| Pixel 6 Pro |
8677800ea4db7ac1d38e304f20e4692488b151ffdbafd7f4d9aff30ab10cceac |
| Pixel 7 |
fe5e433c3fd69bd7fec7a0121976e83a9c567fefa17112465744ca44d7a1c473 |
| Pixel 7 Pro |
d05dd060e97456ebf6ccf2c1b6760c4934d6a87356de960493d48f9194f89a4f |
| Pixel 7a |
7d6e766e9280d1c2f388f88578e8f52bb4939ab1bde87bb9f382e355935a3a7d |
| Pixel Fold |
fa20c88bf2f52e04019272e850f037ca412ba09a3293694ec5a2aef9aa0bbb3a |
| Pixel Tablet |
da1f646d42975650983b9401d545afe2abb5c4043ad1483f3dfedae4173baa95 |
| Pixel 8 |
f0823b4d7d921f9ad3a9fb4d5ad683c1a250af7a9f856638966d69a70ea95cb3 |
| Pixel 8 Pro |
d400eb34755f4ebb4fb7ec0d4946af1e291b21c7f603a7f5f2ec6511f113db3e |
| Pixel 8a |
d4bc4c79e62f2f003acc947924ef2702b90e8b70affc7fb0dcc8fbe7fb953024 |
| Pixel 9 |
6b756d03f59d13c1595738bd337371632b447422a896b4672fba1ce92cb38bf6 |
| Pixel 9 Pro |
8d1200a72debd2335f31ca1dcfd9b0154fa571a3a90badf31a80296841b20a1d |
| Pixel 9 Pro XL |
65176406bd344d17b09dacfc6664fee5727fc826fee0e9b75d5d89b923950508 |
| Pixel 9 Pro Fold |
493b92b66f81ed995162354063dde32ee8b820c02173e87a2d346ab6152ae999 |
| Pixel 9a |
a440b613ca6084e55b4283ce245d4105102abdd9fe38d74a32cc70a29b605d7e |
Tornare a una build pubblica
Puoi utilizzare Android Flash Tool per flashare l'immagine del produttore oppure ottenere un'immagine di sistema con le specifiche di fabbrica dalla pagina Immagini del produttore per dispositivi Nexus e Pixel e poi flasharla manualmente sul dispositivo.
Scarica Android 16 factory system image
Prima di scaricare, devi accettare i seguenti Termini e condizioni.
Termini e condizioni
By clicking to accept, you hereby agree to the following:All use of this development version SDK will be governed by the Android Software Development Kit License Agreement (available at https://developer.android.com/studio/terms and such URL may be updated or changed by Google from time to time), which will terminate when Google issues a final release version.
Your testing and feedback are important part of the development process and by using the SDK, you acknowledge that (i) implementation of some features are still under development, (ii) you should not rely on the SDK having the full functionality of a stable release; (iii) you agree not to publicly distribute or ship any application using this SDK as this SDK will no longer be supported after the official Android SDK is released; and (iv) you agree that Google may deliver elements of the SDK to your devices via auto-update (OTA or otherwise, in each case as determined by Google).
WITHOUT LIMITING SECTION 10 OF THE ANDROID SOFTWARE DEVELOPMENT KIT LICENSE AGREEMENT, YOU UNDERSTAND THAT A DEVELOPMENT VERSION OF A SDK IS NOT A STABLE RELEASE AND MAY CONTAIN ERRORS, DEFECTS AND SECURITY VULNERABILITIES THAT CAN RESULT IN SIGNIFICANT DAMAGE, INCLUDING THE COMPLETE, IRRECOVERABLE LOSS OF USE OF YOUR COMPUTER SYSTEM OR OTHER DEVICE.
Scarica Android 16 factory system image
Prima di scaricare, devi accettare i seguenti Termini e condizioni.
Termini e condizioni
By clicking to accept, you hereby agree to the following:All use of this development version SDK will be governed by the Android Software Development Kit License Agreement (available at https://developer.android.com/studio/terms and such URL may be updated or changed by Google from time to time), which will terminate when Google issues a final release version.
Your testing and feedback are important part of the development process and by using the SDK, you acknowledge that (i) implementation of some features are still under development, (ii) you should not rely on the SDK having the full functionality of a stable release; (iii) you agree not to publicly distribute or ship any application using this SDK as this SDK will no longer be supported after the official Android SDK is released; and (iv) you agree that Google may deliver elements of the SDK to your devices via auto-update (OTA or otherwise, in each case as determined by Google).
WITHOUT LIMITING SECTION 10 OF THE ANDROID SOFTWARE DEVELOPMENT KIT LICENSE AGREEMENT, YOU UNDERSTAND THAT A DEVELOPMENT VERSION OF A SDK IS NOT A STABLE RELEASE AND MAY CONTAIN ERRORS, DEFECTS AND SECURITY VULNERABILITIES THAT CAN RESULT IN SIGNIFICANT DAMAGE, INCLUDING THE COMPLETE, IRRECOVERABLE LOSS OF USE OF YOUR COMPUTER SYSTEM OR OTHER DEVICE.
Scarica Android 16 factory system image
Prima di scaricare, devi accettare i seguenti Termini e condizioni.
Termini e condizioni
By clicking to accept, you hereby agree to the following:All use of this development version SDK will be governed by the Android Software Development Kit License Agreement (available at https://developer.android.com/studio/terms and such URL may be updated or changed by Google from time to time), which will terminate when Google issues a final release version.
Your testing and feedback are important part of the development process and by using the SDK, you acknowledge that (i) implementation of some features are still under development, (ii) you should not rely on the SDK having the full functionality of a stable release; (iii) you agree not to publicly distribute or ship any application using this SDK as this SDK will no longer be supported after the official Android SDK is released; and (iv) you agree that Google may deliver elements of the SDK to your devices via auto-update (OTA or otherwise, in each case as determined by Google).
WITHOUT LIMITING SECTION 10 OF THE ANDROID SOFTWARE DEVELOPMENT KIT LICENSE AGREEMENT, YOU UNDERSTAND THAT A DEVELOPMENT VERSION OF A SDK IS NOT A STABLE RELEASE AND MAY CONTAIN ERRORS, DEFECTS AND SECURITY VULNERABILITIES THAT CAN RESULT IN SIGNIFICANT DAMAGE, INCLUDING THE COMPLETE, IRRECOVERABLE LOSS OF USE OF YOUR COMPUTER SYSTEM OR OTHER DEVICE.
Scarica Android 16 factory system image
Prima di scaricare, devi accettare i seguenti Termini e condizioni.
Termini e condizioni
By clicking to accept, you hereby agree to the following:All use of this development version SDK will be governed by the Android Software Development Kit License Agreement (available at https://developer.android.com/studio/terms and such URL may be updated or changed by Google from time to time), which will terminate when Google issues a final release version.
Your testing and feedback are important part of the development process and by using the SDK, you acknowledge that (i) implementation of some features are still under development, (ii) you should not rely on the SDK having the full functionality of a stable release; (iii) you agree not to publicly distribute or ship any application using this SDK as this SDK will no longer be supported after the official Android SDK is released; and (iv) you agree that Google may deliver elements of the SDK to your devices via auto-update (OTA or otherwise, in each case as determined by Google).
WITHOUT LIMITING SECTION 10 OF THE ANDROID SOFTWARE DEVELOPMENT KIT LICENSE AGREEMENT, YOU UNDERSTAND THAT A DEVELOPMENT VERSION OF A SDK IS NOT A STABLE RELEASE AND MAY CONTAIN ERRORS, DEFECTS AND SECURITY VULNERABILITIES THAT CAN RESULT IN SIGNIFICANT DAMAGE, INCLUDING THE COMPLETE, IRRECOVERABLE LOSS OF USE OF YOUR COMPUTER SYSTEM OR OTHER DEVICE.
Scarica Android 16 factory system image
Prima di scaricare, devi accettare i seguenti Termini e condizioni.
Termini e condizioni
By clicking to accept, you hereby agree to the following:All use of this development version SDK will be governed by the Android Software Development Kit License Agreement (available at https://developer.android.com/studio/terms and such URL may be updated or changed by Google from time to time), which will terminate when Google issues a final release version.
Your testing and feedback are important part of the development process and by using the SDK, you acknowledge that (i) implementation of some features are still under development, (ii) you should not rely on the SDK having the full functionality of a stable release; (iii) you agree not to publicly distribute or ship any application using this SDK as this SDK will no longer be supported after the official Android SDK is released; and (iv) you agree that Google may deliver elements of the SDK to your devices via auto-update (OTA or otherwise, in each case as determined by Google).
WITHOUT LIMITING SECTION 10 OF THE ANDROID SOFTWARE DEVELOPMENT KIT LICENSE AGREEMENT, YOU UNDERSTAND THAT A DEVELOPMENT VERSION OF A SDK IS NOT A STABLE RELEASE AND MAY CONTAIN ERRORS, DEFECTS AND SECURITY VULNERABILITIES THAT CAN RESULT IN SIGNIFICANT DAMAGE, INCLUDING THE COMPLETE, IRRECOVERABLE LOSS OF USE OF YOUR COMPUTER SYSTEM OR OTHER DEVICE.
Scarica Android 16 factory system image
Prima di scaricare, devi accettare i seguenti Termini e condizioni.
Termini e condizioni
By clicking to accept, you hereby agree to the following:All use of this development version SDK will be governed by the Android Software Development Kit License Agreement (available at https://developer.android.com/studio/terms and such URL may be updated or changed by Google from time to time), which will terminate when Google issues a final release version.
Your testing and feedback are important part of the development process and by using the SDK, you acknowledge that (i) implementation of some features are still under development, (ii) you should not rely on the SDK having the full functionality of a stable release; (iii) you agree not to publicly distribute or ship any application using this SDK as this SDK will no longer be supported after the official Android SDK is released; and (iv) you agree that Google may deliver elements of the SDK to your devices via auto-update (OTA or otherwise, in each case as determined by Google).
WITHOUT LIMITING SECTION 10 OF THE ANDROID SOFTWARE DEVELOPMENT KIT LICENSE AGREEMENT, YOU UNDERSTAND THAT A DEVELOPMENT VERSION OF A SDK IS NOT A STABLE RELEASE AND MAY CONTAIN ERRORS, DEFECTS AND SECURITY VULNERABILITIES THAT CAN RESULT IN SIGNIFICANT DAMAGE, INCLUDING THE COMPLETE, IRRECOVERABLE LOSS OF USE OF YOUR COMPUTER SYSTEM OR OTHER DEVICE.
Scarica Android 16 factory system image
Prima di scaricare, devi accettare i seguenti Termini e condizioni.
Termini e condizioni
By clicking to accept, you hereby agree to the following:All use of this development version SDK will be governed by the Android Software Development Kit License Agreement (available at https://developer.android.com/studio/terms and such URL may be updated or changed by Google from time to time), which will terminate when Google issues a final release version.
Your testing and feedback are important part of the development process and by using the SDK, you acknowledge that (i) implementation of some features are still under development, (ii) you should not rely on the SDK having the full functionality of a stable release; (iii) you agree not to publicly distribute or ship any application using this SDK as this SDK will no longer be supported after the official Android SDK is released; and (iv) you agree that Google may deliver elements of the SDK to your devices via auto-update (OTA or otherwise, in each case as determined by Google).
WITHOUT LIMITING SECTION 10 OF THE ANDROID SOFTWARE DEVELOPMENT KIT LICENSE AGREEMENT, YOU UNDERSTAND THAT A DEVELOPMENT VERSION OF A SDK IS NOT A STABLE RELEASE AND MAY CONTAIN ERRORS, DEFECTS AND SECURITY VULNERABILITIES THAT CAN RESULT IN SIGNIFICANT DAMAGE, INCLUDING THE COMPLETE, IRRECOVERABLE LOSS OF USE OF YOUR COMPUTER SYSTEM OR OTHER DEVICE.
Scarica Android 16 factory system image
Prima di scaricare, devi accettare i seguenti Termini e condizioni.
Termini e condizioni
By clicking to accept, you hereby agree to the following:All use of this development version SDK will be governed by the Android Software Development Kit License Agreement (available at https://developer.android.com/studio/terms and such URL may be updated or changed by Google from time to time), which will terminate when Google issues a final release version.
Your testing and feedback are important part of the development process and by using the SDK, you acknowledge that (i) implementation of some features are still under development, (ii) you should not rely on the SDK having the full functionality of a stable release; (iii) you agree not to publicly distribute or ship any application using this SDK as this SDK will no longer be supported after the official Android SDK is released; and (iv) you agree that Google may deliver elements of the SDK to your devices via auto-update (OTA or otherwise, in each case as determined by Google).
WITHOUT LIMITING SECTION 10 OF THE ANDROID SOFTWARE DEVELOPMENT KIT LICENSE AGREEMENT, YOU UNDERSTAND THAT A DEVELOPMENT VERSION OF A SDK IS NOT A STABLE RELEASE AND MAY CONTAIN ERRORS, DEFECTS AND SECURITY VULNERABILITIES THAT CAN RESULT IN SIGNIFICANT DAMAGE, INCLUDING THE COMPLETE, IRRECOVERABLE LOSS OF USE OF YOUR COMPUTER SYSTEM OR OTHER DEVICE.
Scarica Android 16 factory system image
Prima di scaricare, devi accettare i seguenti Termini e condizioni.
Termini e condizioni
By clicking to accept, you hereby agree to the following:All use of this development version SDK will be governed by the Android Software Development Kit License Agreement (available at https://developer.android.com/studio/terms and such URL may be updated or changed by Google from time to time), which will terminate when Google issues a final release version.
Your testing and feedback are important part of the development process and by using the SDK, you acknowledge that (i) implementation of some features are still under development, (ii) you should not rely on the SDK having the full functionality of a stable release; (iii) you agree not to publicly distribute or ship any application using this SDK as this SDK will no longer be supported after the official Android SDK is released; and (iv) you agree that Google may deliver elements of the SDK to your devices via auto-update (OTA or otherwise, in each case as determined by Google).
WITHOUT LIMITING SECTION 10 OF THE ANDROID SOFTWARE DEVELOPMENT KIT LICENSE AGREEMENT, YOU UNDERSTAND THAT A DEVELOPMENT VERSION OF A SDK IS NOT A STABLE RELEASE AND MAY CONTAIN ERRORS, DEFECTS AND SECURITY VULNERABILITIES THAT CAN RESULT IN SIGNIFICANT DAMAGE, INCLUDING THE COMPLETE, IRRECOVERABLE LOSS OF USE OF YOUR COMPUTER SYSTEM OR OTHER DEVICE.
Scarica Android 16 factory system image
Prima di scaricare, devi accettare i seguenti Termini e condizioni.
Termini e condizioni
By clicking to accept, you hereby agree to the following:All use of this development version SDK will be governed by the Android Software Development Kit License Agreement (available at https://developer.android.com/studio/terms and such URL may be updated or changed by Google from time to time), which will terminate when Google issues a final release version.
Your testing and feedback are important part of the development process and by using the SDK, you acknowledge that (i) implementation of some features are still under development, (ii) you should not rely on the SDK having the full functionality of a stable release; (iii) you agree not to publicly distribute or ship any application using this SDK as this SDK will no longer be supported after the official Android SDK is released; and (iv) you agree that Google may deliver elements of the SDK to your devices via auto-update (OTA or otherwise, in each case as determined by Google).
WITHOUT LIMITING SECTION 10 OF THE ANDROID SOFTWARE DEVELOPMENT KIT LICENSE AGREEMENT, YOU UNDERSTAND THAT A DEVELOPMENT VERSION OF A SDK IS NOT A STABLE RELEASE AND MAY CONTAIN ERRORS, DEFECTS AND SECURITY VULNERABILITIES THAT CAN RESULT IN SIGNIFICANT DAMAGE, INCLUDING THE COMPLETE, IRRECOVERABLE LOSS OF USE OF YOUR COMPUTER SYSTEM OR OTHER DEVICE.
Scarica Android 16 factory system image
Prima di scaricare, devi accettare i seguenti Termini e condizioni.
Termini e condizioni
By clicking to accept, you hereby agree to the following:All use of this development version SDK will be governed by the Android Software Development Kit License Agreement (available at https://developer.android.com/studio/terms and such URL may be updated or changed by Google from time to time), which will terminate when Google issues a final release version.
Your testing and feedback are important part of the development process and by using the SDK, you acknowledge that (i) implementation of some features are still under development, (ii) you should not rely on the SDK having the full functionality of a stable release; (iii) you agree not to publicly distribute or ship any application using this SDK as this SDK will no longer be supported after the official Android SDK is released; and (iv) you agree that Google may deliver elements of the SDK to your devices via auto-update (OTA or otherwise, in each case as determined by Google).
WITHOUT LIMITING SECTION 10 OF THE ANDROID SOFTWARE DEVELOPMENT KIT LICENSE AGREEMENT, YOU UNDERSTAND THAT A DEVELOPMENT VERSION OF A SDK IS NOT A STABLE RELEASE AND MAY CONTAIN ERRORS, DEFECTS AND SECURITY VULNERABILITIES THAT CAN RESULT IN SIGNIFICANT DAMAGE, INCLUDING THE COMPLETE, IRRECOVERABLE LOSS OF USE OF YOUR COMPUTER SYSTEM OR OTHER DEVICE.
Scarica Android 16 factory system image
Prima di scaricare, devi accettare i seguenti Termini e condizioni.
Termini e condizioni
By clicking to accept, you hereby agree to the following:All use of this development version SDK will be governed by the Android Software Development Kit License Agreement (available at https://developer.android.com/studio/terms and such URL may be updated or changed by Google from time to time), which will terminate when Google issues a final release version.
Your testing and feedback are important part of the development process and by using the SDK, you acknowledge that (i) implementation of some features are still under development, (ii) you should not rely on the SDK having the full functionality of a stable release; (iii) you agree not to publicly distribute or ship any application using this SDK as this SDK will no longer be supported after the official Android SDK is released; and (iv) you agree that Google may deliver elements of the SDK to your devices via auto-update (OTA or otherwise, in each case as determined by Google).
WITHOUT LIMITING SECTION 10 OF THE ANDROID SOFTWARE DEVELOPMENT KIT LICENSE AGREEMENT, YOU UNDERSTAND THAT A DEVELOPMENT VERSION OF A SDK IS NOT A STABLE RELEASE AND MAY CONTAIN ERRORS, DEFECTS AND SECURITY VULNERABILITIES THAT CAN RESULT IN SIGNIFICANT DAMAGE, INCLUDING THE COMPLETE, IRRECOVERABLE LOSS OF USE OF YOUR COMPUTER SYSTEM OR OTHER DEVICE.
Scarica Android 16 factory system image
Prima di scaricare, devi accettare i seguenti Termini e condizioni.
Termini e condizioni
By clicking to accept, you hereby agree to the following:All use of this development version SDK will be governed by the Android Software Development Kit License Agreement (available at https://developer.android.com/studio/terms and such URL may be updated or changed by Google from time to time), which will terminate when Google issues a final release version.
Your testing and feedback are important part of the development process and by using the SDK, you acknowledge that (i) implementation of some features are still under development, (ii) you should not rely on the SDK having the full functionality of a stable release; (iii) you agree not to publicly distribute or ship any application using this SDK as this SDK will no longer be supported after the official Android SDK is released; and (iv) you agree that Google may deliver elements of the SDK to your devices via auto-update (OTA or otherwise, in each case as determined by Google).
WITHOUT LIMITING SECTION 10 OF THE ANDROID SOFTWARE DEVELOPMENT KIT LICENSE AGREEMENT, YOU UNDERSTAND THAT A DEVELOPMENT VERSION OF A SDK IS NOT A STABLE RELEASE AND MAY CONTAIN ERRORS, DEFECTS AND SECURITY VULNERABILITIES THAT CAN RESULT IN SIGNIFICANT DAMAGE, INCLUDING THE COMPLETE, IRRECOVERABLE LOSS OF USE OF YOUR COMPUTER SYSTEM OR OTHER DEVICE.
Scarica Android 16 factory system image
Prima di scaricare, devi accettare i seguenti Termini e condizioni.
Termini e condizioni
By clicking to accept, you hereby agree to the following:All use of this development version SDK will be governed by the Android Software Development Kit License Agreement (available at https://developer.android.com/studio/terms and such URL may be updated or changed by Google from time to time), which will terminate when Google issues a final release version.
Your testing and feedback are important part of the development process and by using the SDK, you acknowledge that (i) implementation of some features are still under development, (ii) you should not rely on the SDK having the full functionality of a stable release; (iii) you agree not to publicly distribute or ship any application using this SDK as this SDK will no longer be supported after the official Android SDK is released; and (iv) you agree that Google may deliver elements of the SDK to your devices via auto-update (OTA or otherwise, in each case as determined by Google).
WITHOUT LIMITING SECTION 10 OF THE ANDROID SOFTWARE DEVELOPMENT KIT LICENSE AGREEMENT, YOU UNDERSTAND THAT A DEVELOPMENT VERSION OF A SDK IS NOT A STABLE RELEASE AND MAY CONTAIN ERRORS, DEFECTS AND SECURITY VULNERABILITIES THAT CAN RESULT IN SIGNIFICANT DAMAGE, INCLUDING THE COMPLETE, IRRECOVERABLE LOSS OF USE OF YOUR COMPUTER SYSTEM OR OTHER DEVICE.
Scarica Android 16 factory system image
Prima di scaricare, devi accettare i seguenti Termini e condizioni.
Termini e condizioni
By clicking to accept, you hereby agree to the following:All use of this development version SDK will be governed by the Android Software Development Kit License Agreement (available at https://developer.android.com/studio/terms and such URL may be updated or changed by Google from time to time), which will terminate when Google issues a final release version.
Your testing and feedback are important part of the development process and by using the SDK, you acknowledge that (i) implementation of some features are still under development, (ii) you should not rely on the SDK having the full functionality of a stable release; (iii) you agree not to publicly distribute or ship any application using this SDK as this SDK will no longer be supported after the official Android SDK is released; and (iv) you agree that Google may deliver elements of the SDK to your devices via auto-update (OTA or otherwise, in each case as determined by Google).
WITHOUT LIMITING SECTION 10 OF THE ANDROID SOFTWARE DEVELOPMENT KIT LICENSE AGREEMENT, YOU UNDERSTAND THAT A DEVELOPMENT VERSION OF A SDK IS NOT A STABLE RELEASE AND MAY CONTAIN ERRORS, DEFECTS AND SECURITY VULNERABILITIES THAT CAN RESULT IN SIGNIFICANT DAMAGE, INCLUDING THE COMPLETE, IRRECOVERABLE LOSS OF USE OF YOUR COMPUTER SYSTEM OR OTHER DEVICE.