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[Q] (bootloader) Preflash validation failure FAILED (remote: )

I misedited my build.prop so I am trying to reflash a stock system.img to my Atrix 2 using Terminal on my mac.
When I attempt to flash it I get error messages.
localhost:android williamguy$ ./fastboot flash system /Users/williamguy/Desktop/5.5.1-EDEM-28-TNZ_cfc.xml/system.img
target reported max download size of 1056964608 bytes
sending 'system' (491264 KB)...
OKAY [ 23.605s]
writing 'system'...
(bootloader) Preflash validation failure
FAILED (remote: )
I only need to flash the system.img to fix my phone, other images from the rom flash successfully - only boot.img and system.img get this error message.

williamguy said:
I misedited my build.prop so I am trying to reflash a stock system.img to my Atrix 2 using Terminal on my mac.
When I attempt to flash it I get error messages.
localhost:android williamguy$ ./fastboot flash system /Users/williamguy/Desktop/5.5.1-EDEM-28-TNZ_cfc.xml/system.img
target reported max download size of 1056964608 bytes
sending 'system' (491264 KB)...
OKAY [ 23.605s]
writing 'system'...
(bootloader) Preflash validation failure
FAILED (remote: )
I only need to flash the system.img to fix my phone, other images from the rom flash successfully - only boot.img and system.img get this error message.
Click to expand...
Click to collapse
You need to get the moto-fastboot utility. Google search for it.
You use the moto-fastboot command and not the fast boot command to flash. I have used it on my macs many times without issue.... The fastboot command does not work on moto phones/images.

MOTO G: Help for going back and changing firmware from XT1032 to XT1033

Hey nerds,
Could you please help with step by step guide on how to go back and change my UK firmware XT 1032 (for MOTO G) to the normal XT1033 firmware.
I changed my MOTO G XT1033 to XT1032 as was given proper instructions on the web however when I tried searching for instructions going back to XT1033 I didn't find any proper instructions. Please help. I'm kinda in a hurry as I want to sell this phone and need both the sims card tray working.
PS: I have already downloaded the firmware "fastboot_falcon_asia_ds_user_4.3_14.10.0Q3.X-84-7-LCG-4_4_release-keys-cid7-AsiaRetail_03.tar" and per instructions found in the net I got this message
Waiting for fastboot enumeration...
Fastboot device is ready!!
Flashing GPT and bootloader images...
Executing ".\Windows\fastboot.exe flash partition gpt.bi
target max-sparse-size: 256MB
sending 'partition' (32 KB)...
OKAY [ 0.032s]
writing 'partition'...
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 0.456s
.\Windows\fastboot.exe flash partition gpt.bin failed!!
And over the phone this is the message:
Fastboot Reason: UTAG "flashfail" configured as fastboot USB connected
cmd: getvar:max-sparse-size
cmd: download:00008000
cmd: flashartition
version downgraded for primary_gpt
Please help. I'm really desperate.
Will keep a lookout for your reply.

You are flashing 4.3 firmware on 4.4, downgrading doesn't work and might even brick your boot loader!
Try this firmware (it has different flashing instructions)
http://www.filefactory.com/file/3t4v75yvhrd5/RETAIL-AS_FALCON_KXB20.25-1.31_cid7_CFC_1FF.xml.zip

[Q] AIO wireless moto G, is it bricked?

Hi! i've been a long time lurker of the site for a couple of years now, I've happily been able to solve almost all of my problems just by searching the forums. but know I have no idea what to do, so i made an account and see if anyone has any insight on this
Here's the rundown:
recently bought a used moto g and started playing around with it and when i tried to upgrade the firmware manually. i kinda bricked it.
right now it's stuck on the bootloader screen (the one with AP fastboot flash mode (S))
my device is locked, from what i understand this particular model of moto g, the AIO wireless one, can't be bootloader unlocked.
i tried flashing US_retail_XT1032_KXB21.14-L1.32_CFC using the guide on [GUIDE] Moto G - Restore stock firmware
mfastboot flash partition gpt.bin
mfastboot flash motoboot motoboot.img
mfastboot flash logo logo.bin
those commands worked correctly, but the next one,
mfastboot flash boot boot.img gives me the following error
target max-sparse-size: 256MB
sending 'boot' (10240 KB)...
OKAY [ 0.354s]
writing 'boot'...
(bootloader) Preflash validation
FAILED (remote failure)
finished. total time: 0.850s
On the phone it says "hab check failed for boot"
after about an hour of research i was able to figure out which firmware was the original one, using the getvar all command, and it gives me this one
motorola/falcon_aio/falcon_umts:4.
4.2/KXB20.9-1.10-1.9/12:user/bldac
fg,release-keys
: Blur_Version.173.44.9.falcon_umts
: .AIO.en.US
now i was able to get that firmware after a while, and i tried to reflash it to the phone, but now i get these errors
mfastboot flash partition gpt.bin
target max-sparse-size: 256MB
sending 'partition' (32 KB)...
OKAY [ 0.071s]
writing 'partition'...
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 0.458s
on the phone it says "version downgraded for primary_gpt"
on the next command i get this
mfastboot flash motoboot motoboot.img
target max-sparse-size: 256MB
sending 'motoboot' (1940 KB)...
OKAY [ 0.147s]
writing 'motoboot'...
(bootloader) Motoboot: Preflash validation for tz
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 0.493s
and on the phone it says "version downgraded for tz"
the logo flashes fine , but boot gives me another error
mfastboot flash boot boot.img
target max-sparse-size: 256MB
sending 'boot' (10240 KB)...
OKAY [ 0.401s]
writing 'boot'...
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 0.916s
and the phone says "version downgraded for boot"
now ive tried pretty much all the 4.4.2 retail US and 4.4.3 retail US firmwares and i get the same errors, or a combination of them
i have no idea what to do now, and i cant seem to find a 4..4.3 firmware for AIO wireless, and there does not seem to be one
does anybody has some information to signal me in the right direction? i'm afraid i just bricked it, and i barely even used it lol

Moto G wont boot after failed OTA update

Geniuses of the internet!
I am in desperate need of help.
Basically yesterday morning I was greeted with an update notification and being none the wiser I just accepted and thought everything would be ok. Silly me.
Since then my phone has done nothing but boot loop. First to the black screen with Google and the unlocked pad lock, but after some playing I now have a white Warning Bootloader Unlocked message.
I have tried flashing a stock ROM or two with Fastboot and some tools but I cant get the sodding thing to boot up.
Whenever I try to Fastboot files to my phone, the first few files always fail with the same warning
target max-sparse-size: 256MB
sending 'motoboot' (1940 KB)...
OKAY [ 0.140s]
writing 'motoboot'...
(bootloader) Motoboot: Preflash validation for tz
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 0.447s
It might be worth mentioning that this was a Virgin Mobile phone which I flashed to GPe.
So now all I want is to flash my phone to a stock GPe ROM and get the bloody thing working again.
PLEASE HELP!
Ross
Update #1
I flashed Philz to the phone but when trying to sideload the rom, I get a error: device not found message. Fastboot picks up the phone find, I am using minimal ADB and Fastboot install and I have all the latest USB drivers from Motorola.
Also the two files that fail from Fastboot leave a message on the phone
version downgraded for primary_gpt and version downgraded for tz
Still wont boot though.
Update #2
I installed the SDK and tried sideloading and still no dice
Update #3
I found a gpt.bin file in these forums that now does flash, but the motoboot.img still fails

Crashing/Freezing after flashing ROM

I'm not sure what to do, I installed the LiquidSmooth ROM on my device and all went smoothly until about 2 minutes after boot it freezed and crashed, It kept doing this until I got fed up with it and decided to go back to my original firmware. After executing the "flashall.bat /eu" command I got an error about the gpt.bin file and I fixed that by editing the flashall.bat now after executing the command it will say:
-----------------------------------------------------------------------------------------------------------------------Flashing motoboot
Executing ".\Windows\fastboot.exe flash motoboot motoboot.img"
target max-sparse-size: 256MB
sending 'motoboot' <1940 KB>...
OKAY
writing 'motoboot'
<bootloader> Motoboot: Preflash validation for tz
<bootloader> Preflash validation failed
FAILED <remote failure>
finished
---------------------------------------------------------------------------------------------------------------------------
I would like a fix for either because if one is solved it eliminates the need to solve the other.
P.s : Earlier I was getting a "Turning wifi on..." error where the wifi wouldn't turn on.
Device Info : Moto G - XT1031 - 4.4.2 - CWM v6.0.4.7
Thanks

sheltonater said:
I'm not sure what to do, I installed the LiquidSmooth ROM on my device and all went smoothly until about 2 minutes after boot it freezed and crashed, It kept doing this until I got fed up with it and decided to go back to my original firmware. After executing the "flashall.bat /eu" command I got an error about the gpt.bin file and I fixed that by editing the flashall.bat now after executing the command it will say:
-----------------------------------------------------------------------------------------------------------------------Flashing motoboot
Executing ".\Windows\fastboot.exe flash motoboot motoboot.img"
target max-sparse-size: 256MB
sending 'motoboot' <1940 KB>...
OKAY
writing 'motoboot'
<bootloader> Motoboot: Preflash validation for tz
<bootloader> Preflash validation failed
FAILED <remote failure>
finished
---------------------------------------------------------------------------------------------------------------------------
I would like a fix for either because if one is solved it eliminates the need to solve the other.
P.s : Earlier I was getting a "Turning wifi on..." error where the wifi wouldn't turn on.
Device Info : Moto G - XT1031 - 4.4.2 - CWM v6.0.4.7
Thanks
Click to expand...
Click to collapse
Try use another rom

Dr_Ramos22 said:
Try use another rom
Click to expand...
Click to collapse
I've already tried Endrophix and SlimKat both have the same issue.. But thanks