Error when flashing recovery to Moto G4 Plus Xt1640 - Image not signed or corrupt

Question

I recently bought a new android phone (Moto g4 plus). Coming from the iPhone, I was eager to root it and take advantage of all the features.



The problem is that whenever I try to flash a recovery image, I get this error:



C:\Users\myuser\adb>fastboot flash recovery recovery.img

target reported max download size of 536870912 bytes

sending 'recovery' (12496 KB)...

OKAY [  0.400s]

writing 'recovery'...

(bootloader) Image not signed or corrupt



OKAY [  0.197s]

finished. total time: 0.601s


Keep in mind that the bootloader IS unlocked, I even get the warning when restarting the phone. Also this does not happen with just one image file. Every single image file gets this error. I have tried many different versions of TWRP, CLW, etc and all of them get this same error. Does anyone know how to solve this?


— Alexandre Voloch | Sources

Answer

Yeah, I had the same error. The US XT1644 variant can't use the boot.img for the XT1643 and below. I was able to root by installing SuperSU. Run this command:



fastboot boot twrp-3.0.2-0-athene.img



Make sure you copy the SuperSU zip file in the /sdcard/TWRP folder on your device. Then when twrp loads, you can just pick the zip file and install.


— jack | Sources

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