[Help] Moto G5 won't turn on and restarts constantly

[lautidl]

Hello people! I hope you are well

First of all, sorry if the English I write with is not good, I am using Google translator (I am from Argentina)

I want to ask for your help (and I apologize in advance if this is not the correct section, it is my first post)

I have a motorola moto G5 xt1670 which restarts without stopping. I tell you; Friday it started with constant reboots and it did not allow me to use the device correctly. On Saturday morning I reinstalled the operating system (android 8.1 stock) using ADB and fastboot commands, so far so great. I walked for a couple of hours correctly, however, after a few hours the phone restarts and stays in a kind of Bootloop which I can NOT remove. It restarts 5 or 6 times in a row, once it is turned on, I can use it for no more than 5 minutes and it restarts again and so on.

I tried installing the operating system through fastboot, through recovery, I did a thousand wipes, from the same recovery I tried to repair the files, I deleted the original rom and I tried installing an alternative rom (lineage OS and pixel experience), and I can swear that the phone does not rips me off.

In fact, after installing pixel experience, the cell phone sends me a message that says the following: "Android system, there is an internal problem with your device, contact the manufacturer for instructions"

The truth is that I don't know what to try now, reinstall the stock firmware more than 5 times, try to downgrade, and the same thing happens. The phone passes the initial configuration, I move it for two minutes on the desktop and it restarts without end.


If anyone has an idea what it might be, I would greatly appreciate your help!

Thank you!

 

[TheFixItMan]

The message you get on pixel experience about an internal problem contact the manufacturer is normal - this is because the system and vendor fingerprint do not match in a hack to pass safetynet


Anyway going back to your problem
If you have downloaded firmware from
https://mirrors.lolinet.com/firmware/moto/cedric/official/
I recommend using the latest retail version

And installed it using these commands in order

fastboot oem fb_mode_set
fastboot flash partition gpt.bin
fastboot flash bootloader bootloader.img
fastboot flash logo logo.bin
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash dsp adspso.bin
fastboot flash oem oem.img
fastboot flash system system.img_sparsechunk.0
fastboot flash system system.img_sparsechunk.1
fastboot flash system system.img_sparsechunk.2
fastboot flash system system.img_sparsechunk.3
fastboot flash system system.img_sparsechunk.4
fastboot flash system system.img_sparsechunk.5
fastboot flash system system.img_sparsechunk.6
fastboot flash system system.img_sparsechunk.7
fastboot flash system system.img_sparsechunk.8
fastboot flash modem NON-HLOS.bin
fastboot erase modemst1 
fastboot erase modemst2 
fastboot flash fsg fsg.mbn
fastboot erase cache 
fastboot erase userdata 
fastboot oem fb_mode_clear
fastboot reboot

Without any errors (eg validation error security downgrade error etc)

Then you may have a hardware fault - anything from the battery to the main board or other components
Take it to a repair shop for testing

You can also run an adb logcat but this has to be running at the exact moment the reboot happens & it may show why the phone the restarted

And remove the sdcard if you have one inserted or format it to make sure it's not causing any issues