Lenovo Legion Y700 (TB9707F) ROMs

Repo with all the info about the ROMs available for the Lenovo Legion Y700 2022 model

Warning

Do this at your own risk. This process may brick your devices. You can unbrick using this method, but I am not responsible for any dagame caused to your device.

📚 Index

ROMs:

• ⚡ How to flash Official CN Stock ROM (ZUI 14 Android 12 or ZUI 15 Android 13) -> Unbrick device
• ⚡ How to sideload the Unofficial ZUI 15 OTA with Android 13
• ⚡ How to flash a GSI ROM
• ℹ️ GSI ROMs working in the Lenovo Legion Y700 2022

Utilities:

• 🦄 How to install Magisk (Root tablet)
• 🛠️ Magisk fixes: To Be Done
• 🚀 Acknowledgements

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⚡ How to flash Official CN Stock ROM (ZUI 14 Android 12 or ZUI 15 Android 13):

Warning

You need to have your bootloader unlocked to follow the process. Check this post in case you don't have it unlocked: XDA post

• ZUI 14, Android 12: You can check the process in this video or in the XDA post
• ZUI 15, Android 13: You can check the process in this video

Links:

• Download ADB from the offical source
• QFIL - Direct Link
• ZUI 14 Stock CN ROM
• ZUI 15 Stock CN ROM

Other alternatives:

• All the above filles needed in 1 zip file - MEGA
• Other place with OTAs and stock ROMs - Sourceforge thanks to terajima-alc

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⚡ How to sideload the Unofficial ZUI 15 OTA (ZUI 15 Android 13):

You can check the process in this video

• Prerequisites:
  • Download ADB from the offical source
  • Having the CN stock ROM already installed on your device, explained here: ⚡ How to flash CN Stock ROM
  • The OTA zip file (in the video description you have the links too):
    • OTA LINK OPTION 1 - MEGA
    • OTA LINK OPTION 2 - Official Lenovo page

Commands:

1. Check that your PC recognize the device:

adb devices

2. Restart the tablet in recovery mode

adb reboot recovery

3. In the recovery mode select "Apply update from ADB"
4. Start sideloading the OTA update

adb sideload OTA_FILENAME.zip

5. Select "Reboot system now" in the recovery mode and the tablet will reboot with the new version of ZUI and Android

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ℹ️ GSI ROMs working in the Lenovo Legion Y700 2022:

Here you can find a list with all the GSI ROMs. Below I document the ones that I or someone else has already tested and we know they work fine, but if you have used any other ROM that is not in this list but works, please let me know (open an issue on Github, leave a comment on Youtube or send me a Telegram message).

Click on any of the ROMs listed here to see how they look and possible issues

• CRDROID
• EvolutionX
• Voltage OS
• Google AOSP
• LeOS U
• Elixir Project

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⚡ How to flash a GSI ROM:

Tip

I have recorded the whole process on this video. I recommend you to take a look at it before flashing the ROMs.

• Prerequisites:
  • Download ADB from the offical source
  • You will need the vbmeta.img file from the stock ROM (I have a link to it in this video)
  • A GSI ROM, in this example we will use CRDROID

Commands:

1. Check that your PC recognize the device:

adb devices

2. Reboot to booloader

adb reboot bootloader

3. Check that your PC recognize the device in fastboot mode

fastboot devices

Important

In case your device is not recognised in fasboot mode (device does not appear when you run the above command): How to install bootloader interface drivers

4. Flash the vbmeta.img file (from the stock ROM or you can get it here too)

fastboot --disable-verification flash vbmeta vbmeta.img

5. Reboot on fastboot mode

fastboot reboot fastboot

And select "Enter fasboot" in the menu

6. Check you are using a user space

fastboot getvar is-userspace

6. Erase system

fastboot erase system

7. Delete logical partition B

fastboot delete-logical-partition product_b

8. Flash the GSI ROM, for this example we are using CRDROID

fastboot flash system crDroid-10.0-arm64_bgN-Unofficial.img

9. Reboot into recovery

fastboot reboot recovery

10. Select "Wipe Data / Factory Reset" and confirm
11. Select "Reboot System now"

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🦄 How to install Magisk (Root tablet):

Long method:

Patch your own boot.img. The steps are desribed in the following post

Easy method:

Guide in Video

• Download patched img and magisk from here
• Follow the commands below
• In case you have problems with Wifi not turning ON after flashing the boot.img file, try this one instead. (Thanks to Son Kun on Discord)

Commands easy method:

1. Check that your device is detected in ADB

adb devices

2. Install Magisk apk (you can do it by sending the apk to the device or by using the command below)

adb install Magisk.apk

3. Reboot to bootloader

adb reboot bootloader

4. Check that your device is detected in fastboot mode

fastboot devices

5. Flash the patched boot.img

fastboot flash boot magiskPatchedBootB.img

6. Restart to recovery selecting "Restart recovery" (move up/down with vol+/- and confirm with the lock button)
7. Select "Restar system now"
8. Go to Magisk and reboot the device from there
9. Check that the installation has been carried out correctly

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🚀 Acknowledgements

Thanks to vicenteMartinezY700 for this post in XDA about the GSI ROMs and his help testing everything in this tablet.