unofficial build of Android 12 have Now been available for Tecno Spark 7T via AOSP. it is a GSI firmware which can be flashed either with twrp recovery or fastboot mod. You still need a bootloader unlocked device to Perform the flashing Process.
What’s Working and Known issue’s:
| Component | Comment |
|---|---|
| Camera | Works |
| Speaker/Mic | Works |
| Bluetooth | Works |
| Wi-Fi | Works |
| SIM/Mobile Data/Voice | Works |
| VoLTE | Not tested |
| Fingerprint | Works |
| NFC | Works |
| Offline Charging | Works |
| Display Refresh rate | 60Hz |
| Screen Brightness | Works (require tweak) |
| Volume scale | Works |
| 5G | Not tested |
| SafetyNet post root | Passed |
| Wide Vine certification post flash and root | L1 |
Note:
- it will erase all your data Including Internal storage.
- Please do carefully, we are not responsible for any damage to your device.
- some devices does not accept blank vbmeta file, if you will face a brick, patch official vbmeta from your device and write it.
Pre-Requirement:
- unlocked bootloader: follow this Guide
- blank or patched vbmeta file (if not flashed earlier)
Download Links:
- blank vbmeta & Product GSI: Download
- AOSP Android 12 for Tecno Spark 7T: Download
- additional camera app for better pictures: Download
How to Install Android 12 on Tecno Spark 7T:
- Download & extract Platform tools
- Install adb fastboot driver on your computer
- Download and Extract ROM file in Platform tools folder
- on Phone enable usb debugging and oem unlock from developer option
- turn Phone OFF, Press Volume down and power key until You see fastboot logo,
- then connect phone to computer using usb cable
- open command window/cmd in platform tool folder
- send below code to check connected device
fastboot devices
- if no usb device then check usb driver or disconnect and reconnect device
- delete logical partition product
fastboot delete-logical-partition product
- disable android verified boot by sending a patched or blank vbmeta file (first move file to platform tool folder)
fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
- flash ROM by sending below code
fastboot erase system fastboot flash system 'filename'
- replace ‘filename‘ with the correct ROM file name Like ‘fastboot flash system system-squeak-arm64-ab-vanilla.img‘
- Reboot
fastboot reboot
Fixes and Solutions:
- for bluetooth audio enable Misc features > Force-disable A2DP offload
- If you want AOD enable it in Misc features > Force allow Always-On Display
- for brightness enable Misc features > Force alternative backlight scale
- for headphone jack enable Misc features > Use alternate way to detect headsets
Audio jack permanent fix:
adb shell su setprop persist.sys.overlay.devinputjack true reboot
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