Question stuck at bootlogo after installing gsi

[WolfHRB]

Hello everyone. i just want to install Gsi on an new unlocked tab a8, after flashing twrp, I use the fastbootd mode to flash the gsi and installed the multi-disable zip. when I want to reboot to os, it stucked at bootlogo. I don't know where I am wrong, so please help me, in appreciation

 

[lewmur]

Hello everyone. i just want to install Gsi on an new unlocked tab a8, after flashing twrp, I use the fastbootd mode to flash the gsi and installed the multi-disable zip. when I want to reboot to os, it stucked at bootlogo. I don't know where I am wrong, so please help me, in appreciation

We don't know where you went wrong either because you didn't list the steps you took or what GSI you flashed or what stock ROM you started from. Or where you are looping.

 

[WolfHRB]

starting firmware: X200ZCU2CWD3
Steps: 1. Unlock BL
2. flash TWRP via Odin V3.14
3. Format data partition
4. flash dm-verity disabler (File name: Disable_Dm-Verity_ForceEncrypt)
5. reboot to fastbootd mode (using TWRP reboot menu)
6. fastboot erase system
7. fastboot flash system "img path"
8. fastboot -w
9. fastboot reboot

 

[WolfHRB]

We don't know where you went wrong either because you didn't list the steps you took or what GSI you flashed or what stock ROM you started from. Or where you are looping.

starting firmware: X200ZCU2CWD3
Steps: 1. Unlock BL
2. flash TWRP via Odin V3.14
3. Format data partition
4. flash dm-verity disabler (File name: Disable_Dm-Verity_ForceEncrypt)
5. reboot to fastbootd mode (using TWRP reboot menu)
6. fastboot erase system
7. fastboot flash system "img path"
8. fastboot -w
9. fastboot reboot

 

[kevinco1]

starting firmware: X200ZCU2CWD3
Steps: 1. Unlock BL
2. flash TWRP via Odin V3.14
3. Format data partition
4. flash dm-verity disabler (File name: Disable_Dm-Verity_ForceEncrypt)
5. reboot to fastbootd mode (using TWRP reboot menu)
6. fastboot erase system
7. fastboot flash system "img path"
8. fastboot -w
9. fastboot reboot

Don't flash dm-verity disabler for this device and the GSI should boot as long as it's compatible

 

[stradfred]

Don't flash dm-verity disabler for this device and the GSI should boot as long as it's compatible

Without this alway bootloop logo too.
1. Extract the IMG to the adb folder and rename it system.img
2. Flash TWRP with ODIN
3. When booting into TWRP using the Volume up and Power key, select reboot and then fast boot.
4. When you get there, go on your PC and open cmd with the adb folder.
5. Now type fastboot devices just make sure you have the device connect properly. Type fastboot -w after.
6. Type "fastboot flash system system.img" press enter and wait for it to finish. The last line should be be where you can type other commands.
7. When its finished, type fastboot reboot fastboot.

 

[kevinco1]

Without this alway bootloop logo too.
1. Extract the IMG to the adb folder and rename it system.img
2. Flash TWRP with ODIN
3. When booting into TWRP using the Volume up and Power key, select reboot and then fast boot.
4. When you get there, go on your PC and open cmd with the adb folder.
5. Now type fastboot devices just make sure you have the device connect properly. Type fastboot -w after.
6. Type "fastboot flash system system.img" press enter and wait for it to finish. The last line should be be where you can type other commands.
7. When its finished, type fastboot reboot fastboot.

What exact GSI and build are you trying to install? There are only a few that are compatible, otherwise you're not gonna have any other luck flashing

 

[stradfred]

I tryed with on my X200XXU2CWC1 firmware:
lineage-19.1-20230418-UNOFFICIAL-arm64_bgN.img
lineage-20.0-20230324-UNOFFICIAL-arm64_bgN.img
lineage-20.0-20230325-UNOFFICIAL-a64_bgN.img
Old version too but the same result...
Which version we are sure that works?

 

[kevinco1]

I tryed with on my X200XXU2CWC1 firmware:
lineage-19.1-20230418-UNOFFICIAL-arm64_bgN.img
lineage-20.0-20230324-UNOFFICIAL-arm64_bgN.img
lineage-20.0-20230325-UNOFFICIAL-a64_bgN.img
Old version too but the same result...
Which version we are sure that works?

Make sure you are only trying to flash arm64 builds for this device

Both 19.1-20230418 and 20.0-20230324 do install properly but there's certain bugs that make them unfit to be used as a daily driver.

If you're looking for the latest build where everything works (including bluetooth) flash 20.0-20230218

 

[lewmur]

Without this alway bootloop logo too.
1. Extract the IMG to the adb folder and rename it system.img
2. Flash TWRP with ODIN
3. When booting into TWRP using the Volume up and Power key, select reboot and then fast boot.
4. When you get there, go on your PC and open cmd with the adb folder.
5. Now type fastboot devices just make sure you have the device connect properly. Type fastboot -w after.
6. Type "fastboot flash system system.img" press enter and wait for it to finish. The last line should be be where you can type other commands.
7. When its finished, type fastboot reboot fastboot.

You left out the step to format data and factory wipe.

 

[stradfred]

You left out the step to format data and factory wipe.

That's right!
How is it normal to do this command after having flashed a ROM ???
Once done, I boot of course on lineage after a few moments on the Samsung logo.

Which version of lineage is the most stable, 19 (Android 12) or 20 (Android 13)?
Thank you both for your help.

 

[stradfred]

If you're looking for the latest build where everything works (including bluetooth) flash 20.0-20230218

https://sourceforge.net/projects/andyyan-gsi/files/lineage-20-td/History/lineage-20.0-20230218-UNOFFICIAL-arm64_bgN.img.xz/download

I tried this.

 

[lewmur]

That's right!
How is it normal to do this command after having flashed a ROM ???
Once done, I boot of course on lineage after a few moments on the Samsung logo.

Which version of lineage is the most stable, 19 (Android 12) or 20 (Android 13)?
Thank you both for your help.

TWRP and fastboot can't handle the encrypted data partition. So you need to format it. Current versions of LOS re-encrypt it as soon as you boot to system. And you can't use dm-verity on this model, so you can't disable it.

 

[kevinco1]

https://sourceforge.net/projects/andyyan-gsi/files/lineage-20-td/History/lineage-20.0-20230218-UNOFFICIAL-arm64_bgN.img.xz/download

I tried this.

Did you try this build before or after the realization you had left out the steps to wipe and factory reset?

 

[mrspeccy]

Has anyone managed to install a GSI on the SM-X200 with X200XXU2CWC1 firmware? I tried different LOS 20 and LOS 19 GSIs, with and without GAPPS, including the ones mentioned earlier from March and April, but did not succeed a single time. The tablet gets always stuck in a boot loop. I flashed via TWRP and wiped and formatted data every time.

Is it possibly the vendor firmware (SW rev. 2) that prevents the GSI from running? All guides from this forum seems to relate to a SW rev. 1 firmware like X200XXS1CWA3.

 

[lewmur]

Has anyone managed to install a GSI on the SM-X200 with X200XXU2CWC1 firmware? I tried different LOS 20 and LOS 19 GSIs, with and without GAPPS, including the ones mentioned earlier from March and April, but did not succeed a single time. The tablet gets always stuck in a boot loop. I flashed via TWRP and wiped and formatted data every time.

Is it possibly the vendor firmware (SW rev. 2) that prevents the GSI from running? All guides from this forum seems to relate to a SW rev. 1 firmware like X200XXS1CWA3.

If you mean you used the "Install" button in TWRP to flash, then that is your mistake. The "Install" button only has the option to flash the "Super" partition and not the "System". You need to use "Fastboot" to flash the system image. I flashed from CWD2 which is even later than CWC1, so that shouldn't be a problem. If it was, then TWRP wouldn't have worked. I'm running LOS 20 20300507 bgN.

 

[mrspeccy]

No, I used TWRP to get into fastboot mode and said fastboot flash system ...img. I have no idea what I did wrong. Previously I flashed Lineage on a couple of Samsung Tablets (SM-T510, SM-T505).

 

[kevinco1]

No, I used TWRP to get into fastboot mode and said fastboot flash system ...img. I have no idea what I did wrong. Previously I flashed Lineage on a couple of Samsung Tablets (SM-T510, SM-T505).

There are only certain LOS builds that work with this device, you're wasting your time if you are blindly flashing random ones.

Refer to earlier posts to confirm which ones do work. And like @lewmur just reported the newest build 20300507 bgN does flash successfully

 

[mrspeccy]

The 20230507 bgN was actually the first build I tried before I went to older variants, including the 20220814 bgN that is mentioned in a different thread.

@lewmur : Did you do a clean flash and format data before you installed the 20230507 build on the CWD2 firmware? There might be some issues with format data and the TWRP 3.7.0-12.2 from this forum (https://forum.xda-developers.com/t/...-for-2021-galaxy-tab-a8-10-5-sm-x200.4488691/) on the latest kernel. After I format data in TWRP, the tablet is recognized as writable media in Windows, but I get reading and writing errors when I try to access the about 22 GB large partition.

I know that it is impossible to roll back the bootloader to revision 1, but may it be possible that I extract and flash a kernel from the X200XXS1CWA3 to further investigate this issue?

 

[lewmur]

The 20230507 bgN was actually the first build I tried before I went to older variants, including the 20220814 bgN that is mentioned in a different thread.

@lewmur : Did you do a clean flash and format data before you installed the 20230507 build on the CWD2 firmware? There might be some issues with format data and the TWRP 3.7.0-12.2 from this forum (https://forum.xda-developers.com/t/...-for-2021-galaxy-tab-a8-10-5-sm-x200.4488691/) on the latest kernel. After I format data in TWRP, the tablet is recognized as writable media in Windows, but I get reading and writing errors when I try to access the about 22 GB large partition.

I know that it is impossible to roll back the bootloader to revision 1, but may it be possible that I extract and flash a kernel from the X200XXS1CWA3 to further investigate this issue?

You must do a clean flash. The purpose of formatting the data partition is to get rid of the encryption. TWRP can't handle the encryption. And LOS will re-encrypt it the first time you boot to system. As to extracting the kernel from CWA3, I don't advise doing that. It could hard brick the tablet.