Downgrade CM13 to stock failed

[Waishon]

Hi,

i tried to downgrade CM 13 to the Stock Android 5.0.2 and relock it (I know that Motorla has the unlock indicator, but this doesn't matter here).

So I tried the following steps as descripted in a lot of posts, but every command failed:

fastboot oem lock begin //success
fastboot flash partition gpt.bin // Preflash validation failed ->version downgraded for primary gpt
fastboot flash motoboot motoboot.img //  Preflash validation for tz -> version downgraded for tz
fastboot flash boot boot.img //  Preflash validation failed -> version downgraded for boot

So how can I solve the problem? I think it has something to do with downgrading

 

[lost101]

You may need to use mfastboot.

However, if you have updated your Bootloader; you may no longer be able to flash a firmware image older than Android 5.1. If that turns out to be the case flash the latest 5.1 Factory Firmware Image for your model using Fastboot. If this is not successful, it would help to see a log of the flashing process. Copy and paste command prompt screen. Take screenshots if necessary.

Firmware Images: http://forum.xda-developers.com/moto-g/general/index-moto-g-falcon-factory-firmware-t3110795
Fastboot Tutorial: http://forum.xda-developers.com/showthread.php?t=2542219

 

[Waishon]

Unfortunately it makes no difference, same errors.
I already flashed this stock image some time before and it works. And the bootloader is on 41.18.

 

[lost101]

Try with the firmware files in the same folder as mfastboot.exe.

mfastboot flash partition gpt.bin​

 

[Waishon]

Nope, same error

 

[lost101]

You could simply skip that command. And there is always the option to flash the Stock ROM via TWRP.

[ROM][FALCON][5.1][STOCK] Stock Motorola Lollipop ROM Collection​

[ROM][FALCON][6.0][STOCK] Identity Crisis 6​

 

[Waishon]

The problem is that all commands failes (including boot.IMG, which is obviously needed). TWRP would be possible, but then I can't relock it.

 

[lost101]

The problem is that all commands failes (including boot.IMG, which is obviously needed). TWRP would be possible, but then I can't relock it.

Flash ROM via TWRP, then relock via fastboot. I would expect it to work.

 

[Waishon]

Does relocking work with a custom recovery? Interesting

 

[lost101]

Does relocking work with a custom recovery? Interesting

I'm not aware of any relationship between recovery and relocking - but I have no personal experience. If you did need to flash the Stock Recovery, this can be done via TWRP.