針對 Pixel 6、Pixel 6 Pro 和 Pixel 6a 裝置，Android 13 包含了引導程式更新，可解決潛在的安全漏洞，且這些裝置的防回溯計數器會增加，避免裝置回溯至 Android 12。
為協助開發及測試應用程式，我們為這些 Pixel 裝置提供經過修改的 Android 12 系統映像檔，稱為「開發人員支援映像檔」。開發人員支援映像檔是以 Android 12 (API 級別 31) 的穩定公開版本和 12L 功能推送 (API 級別 32) 為基礎的系統映像檔，其中也包括包含安全性修正的更新版本，以及漸進式反復原計數器。
搭載 Android 13 的 Pixel 6、6 Pro 或 6a 裝置可以復原為 Android 12 開發人員支援映像檔，但無法復原至任何其他 Android 12 映像檔。執行開發人員支援映像檔的裝置可以刷新至最新公開版本，但無法刷新至任何先前的 Android 12 映像檔。
一般公告
開發人員支援版本旨在提供系統和應用程式體驗，盡可能與在一般使用者裝置上執行 Android 12 的行為相近。不過，在使用這些版本進行開發和測試時，請留意以下幾點：
- 開發人員支援版本僅供開發人員使用，不適合一般使用。
- 使用開發人員支援版本的裝置不會收到類似其他裝置的 OTA 安全性更新，且開發人員支援映像檔並未以最新的安全性修正項目重建。只包含更新的啟動載入程式版本，以及其本身的安全性修正程式和遞增的反回滾計數器。
- 開發人員支援版本並未獲得 Compatibility Test Suite (CTS) 核准，但已通過初步測試，並為開發人員提供一組穩定的 API。需要 CTS 核准版本或使用 SafetyNet API 的應用程式可能無法在 Android 12 開發人員支援版本中正常運作。
如何提供意見回饋
請使用 Issue Tracker 建立新問題，並針對你與其他開發人員已建立的問題，進行檢視、追蹤及投票。
在建立問題前，請先查看待解決問題清單，確認是否已有其他人回報相同問題。你可以在 Issue Tracker 中為問題加上星號
，以訂閱問題並進行投票。詳情請參閱「為問題加上星號以訂閱問題」。如需 Google Issue Tracker 的一般說明，請參閱說明文件。
刷新裝置
您可以透過下列任一方式，將 Android 12 開發人員支援版本刷新至裝置：
使用 Android Flash Tool 刷新裝置
透過 Android Flash Tool，您可以將系統映像檔安全刷新至支援的 Pixel 裝置。Android Flash Tool 可搭配任何支援 WebUSB 的網路瀏覽器使用，例如 Chrome 或 Edge 79 以上版本。
Android Flash Tool 會逐步引導刷新裝置過程，期間您不需要安裝任何工具，但是必須解鎖裝置，並在開發人員選項中啟用 USB 偵錯功能。
透過 USB 連接裝置，然後使用下列其中一個連結前往 Android Flash Tool，並按照螢幕上的指示操作：
如需完整操作說明，請參閱 Android Flash Tool 說明文件。
手動刷新裝置
您也可以下載開發人員支援映像檔，然後手動將該映像檔刷新至裝置。請參閱下表，下載測試裝置適用的系統映像檔：如果您需要整個測試環境的精確控制項，或需要頻繁重新安裝 (例如執行自動化測試) 時，不妨手動刷新裝置。
備份好裝置資料，並下載下列相符的系統映像檔後，即可將映像檔刷新到裝置上。
您隨時都可以返回使用最新的公開版本。
裝置原廠映像檔
Pixel 6
| 發布日期 | 2022 年 8 月 29 日 |
| Android 12 (API 級別 31) |
版本：SQ1D.220205.004.X2 安全性修補程式等級：2022 年 2 月 Google Play 服務：21.24.23 |
| 12L 功能推送 (API 級別 32) |
版本：SQ3A.220705.004.X2 安全性修補程式等級：2022 年 7 月 Google Play 服務：22.26.15 |
Pixel 6 Pro
| 發布日期 | 2022 年 8 月 29 日 |
| Android 12 (API 級別 31) |
版本：SQ1D.220205.004.X2 安全性修補程式等級：2022 年 2 月 Google Play 服務：21.24.23 |
| 12L 功能推送 (API 級別 32) |
版本：SQ3A.220705.004.X2 安全性修補程式等級：2022 年 7 月 Google Play 服務：22.26.15 |
Pixel 6a
| 發布日期 | 2022 年 8 月 29 日 |
| 12L 功能推送 (API 級別 32) |
版本：SD2A.220601.004.X2 安全性修補程式等級：2022 年 6 月 Google Play 服務：22.26.15 |
| 裝置 | 版本 | 下載連結 | SHA-256 總和檢查碼 |
|---|---|---|---|
| Pixel 6 | Android 12 (API 級別 31) | 1b9d8fc0de380af1a9041f0267c4e31dd5e98de4c8a4d419f28e2c66e89cb68c |
|
| 12L 功能推送 (API 級別 32) | c5a024229cf49055559c5d2c4088754f36402222a050be30844ff5d821ed06c3 |
||
| Pixel 6 Pro | Android 12 (API 級別 31) | ca630efcbbf56f41300e21e70054f66820bdfdc61aa64cf89d4fac2a9e7623b8 |
|
| 12L 功能推送 (API 級別 32) | 56c65af280d45e21b53c12ef27d2d5a1155d2169c55f4d0586eb125560346219 |
||
| Pixel 6a | 12L 功能推送 (API 級別 32) | 6f661e14bd3f2f23faee6d00877df1a2a09b139047c9c03fbdcae9f1cd45ed3c |
返回公開版本
您可以使用 Android Flash Tool 來刷新原廠映像檔，也可以從 Nexus 和 Pixel 裝置的原廠映像檔頁面取得原廠規格的系統映像檔，然後以手動方式將該映像檔刷新到裝置上。
下載 Android 12 Developer Support system image
下載前，請先同意以下條款及細則。
條款及細則
Developer Support version warning: You are about to download, install, and use a Developer Support version of Android on your Pixel device. Developer Support versions may not be stable, and may contain errors and defects that can result in serious damage to computer systems, devices, applications and data. Data or metrics may be collected from the devices in the Developer Support build at the sole discretion of Google. Google makes no warranties, express or implied, with respect to the Developer Support versions. Your use is at your own risk, and not Google's. Certain functionality (including core functionality, such as your ability to place and receive calls) or applications may not work properly. You are solely responsible for any error, defect, damage or destruction due to such use, including damage to any device or loss of data. The Developer Support version of Android contains a bootloader update with the latest anti-rollback version. After installing the Developer Support version, you will no longer be able to revert to a public release Android version with a lower bootloader anti-rollback version. Switching between Developer Support and public release Android versions on your device may require you to wipe all data from your device.下載 Android 12 Developer Support system image
下載前，請先同意以下條款及細則。
條款及細則
Developer Support version warning: You are about to download, install, and use a Developer Support version of Android on your Pixel device. Developer Support versions may not be stable, and may contain errors and defects that can result in serious damage to computer systems, devices, applications and data. Data or metrics may be collected from the devices in the Developer Support build at the sole discretion of Google. Google makes no warranties, express or implied, with respect to the Developer Support versions. Your use is at your own risk, and not Google's. Certain functionality (including core functionality, such as your ability to place and receive calls) or applications may not work properly. You are solely responsible for any error, defect, damage or destruction due to such use, including damage to any device or loss of data. The Developer Support version of Android contains a bootloader update with the latest anti-rollback version. After installing the Developer Support version, you will no longer be able to revert to a public release Android version with a lower bootloader anti-rollback version. Switching between Developer Support and public release Android versions on your device may require you to wipe all data from your device.下載 Android 12 Developer Support system image
下載前，請先同意以下條款及細則。
條款及細則
Developer Support version warning: You are about to download, install, and use a Developer Support version of Android on your Pixel device. Developer Support versions may not be stable, and may contain errors and defects that can result in serious damage to computer systems, devices, applications and data. Data or metrics may be collected from the devices in the Developer Support build at the sole discretion of Google. Google makes no warranties, express or implied, with respect to the Developer Support versions. Your use is at your own risk, and not Google's. Certain functionality (including core functionality, such as your ability to place and receive calls) or applications may not work properly. You are solely responsible for any error, defect, damage or destruction due to such use, including damage to any device or loss of data. The Developer Support version of Android contains a bootloader update with the latest anti-rollback version. After installing the Developer Support version, you will no longer be able to revert to a public release Android version with a lower bootloader anti-rollback version. Switching between Developer Support and public release Android versions on your device may require you to wipe all data from your device.下載 Android 12 Developer Support system image
下載前，請先同意以下條款及細則。
條款及細則
Developer Support version warning: You are about to download, install, and use a Developer Support version of Android on your Pixel device. Developer Support versions may not be stable, and may contain errors and defects that can result in serious damage to computer systems, devices, applications and data. Data or metrics may be collected from the devices in the Developer Support build at the sole discretion of Google. Google makes no warranties, express or implied, with respect to the Developer Support versions. Your use is at your own risk, and not Google's. Certain functionality (including core functionality, such as your ability to place and receive calls) or applications may not work properly. You are solely responsible for any error, defect, damage or destruction due to such use, including damage to any device or loss of data. The Developer Support version of Android contains a bootloader update with the latest anti-rollback version. After installing the Developer Support version, you will no longer be able to revert to a public release Android version with a lower bootloader anti-rollback version. Switching between Developer Support and public release Android versions on your device may require you to wipe all data from your device.下載 Android 12 Developer Support system image
下載前，請先同意以下條款及細則。