moto g4 wont boot

mad1milo

New member
May 8, 2011
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hi now I no you prob see this title and think oh another 1 but hear me out as I cant find any thing the same as the issue I'm having.
so I followed a rooting guide unlocked bootloader installed twrp all good installed supersu phone wont boot reinstalled twrp systemless installed supersu still nothing I have followed every guide I can find phone will only boot into twrp or bootloader I have flashed custom and stock roms however I do keep getting

target reported max download size of 536870912 bytes
sending 'partition' (32 KB)...
OKAY [ 0.004s]
writing 'partition'...
(bootloader) Security version downgrade

(bootloader) Image primary_gpt failed validation

(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 0.071s
PS C:\Program Files (x86)\Minimal ADB and Fastboot>
I have tried every way I can find still nothing when I try to boot it freezes on the screen saying my phone is unlocked and cant be trusted I'm now lost don't no were to go from here I did not back any thing up as the first thread I read don't say bout it and iv neva had any problems with any of my other phones or games consoles I no games consoles are different any help would be amazing
 

yadielglz

Senior Member
Mar 25, 2015
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San Juan
Most likely the flashing wasn’t complete or corrupted or the stock ROM wasn’t the correct one (Remember to be safe you’d have to flash the original ROM when you bought the phone) that being said. My suggestion you should try flashing TWRP again and boot into TWRP. Then flash stock ROM which will overwrite the current config. Not guaranteed, but it’s worth a shot.

Good luck.


Sent from my iPhone 7 Plus from Tapatalk
 

mad1milo

New member
May 8, 2011
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Sorry to sound dumb flash it through twrps? I can get twrps to boot but thats it iv flashed through bootloader putting all commands in separate but when i tried to boot it came up with no command with the andriod dude with a red triangle above him but i can flash and boot twrps after this
 

echo92

Senior Member
Jan 1, 2017
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1) If you're rooting on stock Motorola Nougat ROMs, you need a custom kernel - attempting to root on the stock Motorola hudsoncm kernel usually results in a boot failure or bootloop as you've found. https://forum.xda-developers.com/mo...de-root-moto-g4-plus-supersu-android-t3587918 for a useful guide, you can root with either magisk or SuperSU.

2)That security downgrade error suggests you're attempting to flash stock firmware older than the firmware matching your device's bootloader. If you need newer firmware, you could look into this thread: https://forum.xda-developers.com/moto-g4-plus/how-to/stock-rom-npjs25-93-14-4-march-1-t3608138 You'll need to flash this firmware via fastboot/the bootloader.

3) Try first of all booting into TWRP, copy a custom kernel to your device via a computer and USB cable, and then flash the custom kernel. See if that gets your device booting. If not, you may have to re-flash the stock firmware to get your device booting again (or use a backup, if you had one).
 

hlpain

Member
Apr 19, 2010
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1) If you're rooting on stock Motorola Nougat ROMs, you need a custom kernel - attempting to root on the stock Motorola hudsoncm kernel usually results in a boot failure or bootloop as you've found. https://forum.xda-developers.com/mo...de-root-moto-g4-plus-supersu-android-t3587918 for a useful guide, you can root with either magisk or SuperSU.

2)That security downgrade error suggests you're attempting to flash stock firmware older than the firmware matching your device's bootloader. If you need newer firmware, you could look into this thread: https://forum.xda-developers.com/moto-g4-plus/how-to/stock-rom-npjs25-93-14-4-march-1-t3608138 You'll need to flash this firmware via fastboot/the bootloader.

3) Try first of all booting into TWRP, copy a custom kernel to your device via a computer and USB cable, and then flash the custom kernel. See if that gets your device booting. If not, you may have to re-flash the stock firmware to get your device booting again (or use a backup, if you had one).
If xt1625 amazon not having understood flash RSD firmware ATHENE_NPJS25.93-14-13 (instead ATHENE_AMZ_NPJ25.93-14.7) is there any way to restore the phone's load ?
bootloder lock, oem lock, "we have detected an attempt to flash unauthorized sw on your device"
 
Last edited:

echo92

Senior Member
Jan 1, 2017
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Plymouth
If xt1625 amazon not having understood flash RSD firmware ATHENE_NPJS25.93-14-13 (instead ATHENE_AMZ_NPJ25.93-14.7) is there any way to restore the phone's load ?
bootloder lock, oem lock, "we have detected an attempt to flash unauthorized sw on your device"
Have you tried to flash this firmware: https://androidfilehost.com/?fid=817906626617956922 That should be the AMZ NPJ25.93-14.7 US firmware (for XT1625 and XT1644)
 
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hlpain

Member
Apr 19, 2010
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tried, error gpt bootloader, all firmware below 14-13 not installed, AMZ NPJ25.93-14-13 I did not find it or it does not exist.
 

echo92

Senior Member
Jan 1, 2017
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tried, error gpt bootloader, all firmware below 14-13 not installed, AMZ NPJ25.93-14-13 I did not find it or it does not exist.
Unfortunately you'd have to wait for a newer firmware, the NPJS25.93-14-13, NPJS25.93-14-15 and NPJS25.93-14-18 firmwares are for retail devices. Amazon devices are on a different firmware and as you've partially flashed the Dec 2017 firmware, you'd likely need AMZ NPJ25.93-14.7-3 or NPJ25.93-14.7-5 (Feb 2018 update), however neither AMZ build appears to be available at the moment.

If you're desperate for a working device, your best bet may be to talk to Amazon or Motorola support, or if your bootloader was previously unlocked, you could try to unlock your bootloader and flash a custom ROM.
 
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