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[GUIDE][Osprey] Fastboot Flashing Factory Firmware Images

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lost101

Inactive Recognized Contributor
May 30, 2008
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What do these commands do ?
fastboot oem fb_mode_set
fastboot erase customize
fastboot erase clogo
fastboot oem fb_mode_clear
All can be omitted, but are part of the default series of flashing commands. 'customize' and 'clogo' are two partitions that can be safely wiped. 'oem fb_mode' simply forces the phone to reboot into fastboot mode if something interrupted the flashing process - i.e phone rebooted accidentally.
 
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willygoodboy

Senior Member
Dec 10, 2012
74
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Lons le Saunier
Check the names of the files in the firmware folder. Do not simply copy and paste commands from the tutorial. You need to flash all sparsechunks. Provide a log. Show me the contents of command prompt. Take screenshots if necessary.
Hello lost101
Thanks for your help. I verified the names of files and i saw that i forget the sparsechunks 6. I'm an idiot. sorry for this. you're right i copied and pasted from tuto.
Thanks again
 
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Weekndz

Member
Nov 21, 2015
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Can someone help me? i install a wrong firmware and now my phone say Startup Failed. and i try to install the 2 gb version and get no sucess, and try to back to lollipop and fall again, because my boot is locked. please help me. XT1550 1GB RAM 16 GB stroge
 

apina666

Member
Mar 30, 2015
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12
hi. i have xt1541 and have custom rom and twrp in it. now i want to flash stock 6.0 firmware, can i just flash everythin in fastboot or should i first flash stock 5.1.1 before flashing stock6.0 firmware?
 

lost101

Inactive Recognized Contributor
May 30, 2008
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Can someone help me? i install a wrong firmware and now my phone say Startup Failed. and i try to install the 2 gb version and get no sucess, and try to back to lollipop and fall again, because my boot is locked. please help me. XT1550 1GB RAM 16 GB stroge
Read the first post. Change the names of sparsechunks to match actual files in firmware folder. Provide a log. Show me command prompt results - take screenshots

hi. i have xt1541 and have custom rom and twrp in it. now i want to flash stock 6.0 firmware, can i just flash everythin in fastboot or should i first flash stock 5.1.1 before flashing stock6.0 firmware?
Just flash the 6.0 firmware image. If anything else was required, I would have said so in the tutorial.
 
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Weekndz

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Nov 21, 2015
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Read the first post. Change the names of sparsechunks to match actual files in firmware folder. Provide a log. Show me command prompt results - take screenshots.

How i do that?? i try install 6.0 2GB Version in 1GB Version, no sucess, try back to lollipop, no sucess again, now my phone is bricked, and my bootloader blocked. what i need do??

XT1550 1GB Ram 16 Storage
 

lost101

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May 30, 2008
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Weekndz

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Nov 21, 2015
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12696635_183983778630374_1797060962_o.jpg


See that, this happens when i put the 2gb ram rom in my 1gb



12669336_183985208630231_1667867515_o.jpg


this happens when i try install the 5.1
 
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lost101

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May 30, 2008
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My cel dont enter in recovery, he boot up and show the message "start up failed"
now i do the reset via fastboot, what i need do now for he don t show the message again?

How are you flashing the files, in command prompt? Show me what is being said there. Copy and paste the screen.

The following command might make Stock Recovery work:
fastboot erase userdata​
 

lost101

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May 30, 2008
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@Weekndz - Don't use a directory name with spaces. " Moto g 5.1" is bad news. "Motog_firmware51" is better.
 

Weekndz

Member
Nov 21, 2015
15
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How are you flashing the files, in command prompt? Show me what is being said there. Copy and paste the screen.

The following command might make Stock Recovery work:
fastboot erase userdata​


in the prompt i extract all rom files with adb, and type that:
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 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 modem NON-HLOS.bin
fastboot erase modemst1
fastboot erase modemst2
fastboot flash fsg fsg.mbn
fastboot erase cache
fastboot erase userdata
fastboot erase customize
fastboot erase clogo
fastboot oem fb_mode_clear
fastboot reboot

after i tipe that, show that for me:

12696635_183983778630374_1797060962_o.jpg



all that in the XT1550 2GB RAM ROM

and the my is XT1550 1GB RAM ROM

---------- Post added at 10:31 PM ---------- Previous post was at 10:28 PM ----------

@Weekndz - Don't use a directory name with spaces. " Moto g 5.1" is bad news. "Motog_firmware51" is better.

right, i will try again it "Motog_firmware51"
 

lost101

Inactive Recognized Contributor
May 30, 2008
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Same ****, fail in the 6.0 2GB.

Fail in BootImage, Recovery Image and in all sparsechunk..
You where warned in first post not to flash a firmware image for a model different from your own. You may be stuck now. You cannot unlock Bootloader unless you have activated "Enable OEM unlock" in Android > Settings > Developer settings. That is the only way around the 'preflash validation' error.

I guess you now have to wait for the XT1550 1GB 6.0 Firmware Image to become available. Alternatively, you can take the risk and try flashing the Dual-SIM XT1543 Retail Brazil 1GB 6.0 Firmware image.
 

Weekndz

Member
Nov 21, 2015
15
0
You where warned in first post not to flash a firmware image for a model different from your own. You may be stuck now. You cannot unlock Bootloader unless you have activated "Enable OEM unlock" in Android > Settings > Developer settings. That is the only way around the 'preflash validation' error.

I guess you now have to wait for the XT1550 1GB 6.0 Firmware Image to become available. Alternatively, you can take the risk and try flashing the Dual-SIM XT1543 Retail Brazil 1GB 6.0 Firmware image.


Don't have any Brazillian XT1550, Its only Asian, is that version i'm trying to install.. i don't put other versions o_O
 

Azyreal

New member
Feb 7, 2016
4
0
Hello, I've tried to flash my XT1541 Europe 2GB model with Android 6 using this tutorial, but I didn't flash the sixth sparsechunk... Now I'm blocked on bootloader screen with the error, "Failed to pass validation, backup to fastboot". I assume I get that error because of the sixth file I didn't flashed, can I re-do the tutorial or do I have to do something else, like flash my old version (or am I stuck with a brick and cannot do anything with it until the end of time?)? I hope you can help me!
 

lost101

Inactive Recognized Contributor
May 30, 2008
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Hello, I've tried to flash my XT1541 Europe 2GB model with Android 6 using this tutorial, but I didn't flash the sixth sparsechunk... Now I'm blocked on bootloader screen with the error, "Failed to pass validation, backup to fastboot". I assume I get that error because of the sixth file I didn't flashed, can I re-do the tutorial or do I have to do something else, like flash my old version (or am I stuck with a brick and cannot do anything with it until the end of time?)? I hope you can help me!
Re-do tutorial, only flashing sparsechunk files in your firmware folder.
 

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    Disclaimer: I am not responsible for anything that happens as a result of flashing these files. Your destiny is your own.

    Based on existing tutorial by @t-bon3. This guide has been created as a hard-brick occurred using the old Moto G (1st Gen) tutorial. Please exercise extreme care with Fastboot, and only use the commands mentioned here. Experimenting with Fastboot commands can seriously damage your phone.


    How to Fastboot Flash Moto G (3rd Gen) Factory Firmware Images

    Required Files:
    Motorola Drivers: Download
    Latest Fastboot | ADB (Windows | Linux): Download (Windows 10 users may need this pack for Drivers to work.)
    Factory Firmware Images: [INDEX][Osprey] Moto G Factory Firmware Images

    WARNING: You must perform a 'Factory data reset' in Stock Recovery before flashing any Firmware Image - instructions here.


    Instructions:

    1) Extracting Fastboot and Firmware Images:
    Extract zip for chosen Firmware Image to a folder with a simple directory structure. For example: C:\motog_firmware\
    Extract the adb-fastboot-latest_win_linux.zip into this folder.​

    2) Reboot the phone into 'Bootloader mode' and preparing PC for flashing

    Windows:
    Entering Fastboot mode:
    ------------------------------------
    i) The 'hardware' way.

    a) Unplug the USB cable and power off the phone.
    b) Press and hold 'Volume down' then power on the phone.
    c) Connect USB cable to your computer.

    ii) The 'software' way.

    a) Enable developer mode on the Moto G (Settings-> 'About Phone'. Tap 7 times on 'Build Number')
    b) Enable USB debugging. (Settings -> 'Developer options' -> 'USB Debugging' -> check)
    c) Connect phone to computer via USB, you should see a new ADB device detected and drivers installed.
    d) Open Command Prompt, navigate to the Firmware / ADB folder (i.e CD C:\motog_firmware ) and type:

    Code:
    adb reboot-bootloader
    Linux:
    Entering Fastboot mode:
    ------------------------------------
    i) The 'hardware' way.

    a) Unplug the USB cable and power off the phone.
    b) Press and hold 'Volume down' then power on the phone.
    c) Connect USB cable to your computer.

    ii) The 'software' way. (Requires ADB to be already installed - see below)

    a) Enable developer mode on the Moto G (Settings-> 'About Phone'. Tap 7 times on 'Build Number')
    b) Enable USB debugging. (Settings -> 'Developer options' -> 'USB Debugging' -> check)
    c) Connect phone to computer via USB
    d) Navigate to the Firmware folder, right-click and open terminal and type:

    Code:
    adb reboot-bootloader

    Installing ADB / Fastboot:
    -------------------------------------
    Flashing via Linux LiveCD: (Put factory firmware files on an external usb drive / pen)
    --------------------------------
    a) Download Ubuntu LiveCD
    b) Burn to DVD or write to USB pen
    c) Restart PC, Boot from DVD into Ubuntu
    d) Open Terminal and type the following:
    sudo add-apt-repository ppa:nilarimogard/webupd8
    sudo apt-get update
    sudo apt-get install android-tools-adb android-tools-fastboot​

    e) Test fastboot by typing: sudo fastboot devices
    You should see:
    <serial number> fastboot​
    f) You are now ready to flash the fastboot files


    3) Fastboot Commands:

    Do commands manually, one at a time - checking that each one returns an [OKAY].​

    NOTE: Do not simply copy and paste these commands! - system.img_sparsechunks may differ in number and name.
    Always check contents of folder you're working with. You must flash all of the sparsechunk files you have.

    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 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 erase customize
    fastboot erase clogo
    fastboot oem fb_mode_clear
    fastboot reboot​

    ALWAYS CHECK YOUR MODEL
    FLASHING WRONG FIRMWARE CAN DESTROY A PHONE
    31
    Frequently Asked Questions:

    Can I restore Factory Firmware if my Bootloader is locked?
    Yes. However attempting to downgrade to an older version of Android may fail - 'Preflash validation' error. Even with an unlocked Bootloader, downgrading cannot be guaranteed. It's also important to be aware that flashing the wrong Bootloader (bootloader.img) for your model can have serious consequences. Always establish your model of Moto G before flashing.

    I get a 'Preflash validation' error when flashing a Firmware Image
    The Firmware Image you are trying to flash is too old. You can only flash a firmware image that matches, or is newer than the most recent system version you have had on your phone. However the former scenario can also sometimes return the error. In which case, your options are to wait for an even newer firmware image or unlock Bootloader and flash a ROM zip.

    After flashing Firmware Image files phone gets stuck during boot-up | will not load Android?
    Check you are naming the files correctly, and make sure you are flashing all of the 'sparsechunk' files - not just those mentioned in the tutorial. The 'sparsechunk' commands listed there are not to be copied exactly, different firmware images may have different files.

    How to flash Radio Firmware only?
    Use the following fastboot commands:
    fastboot flash modem NON-HLOS.bin
    fastboot erase modemst1
    fastboot erase modemst2
    fastboot flash fsg fsg.mbn​

    How do I downgrade to an older Firmware?
    Downgrading carries risks, and may result in constant nagging notifications to update Android. Decide carefully if this is really what you want. With earlier generations of Moto G flashing bootloader.img and gpt.bin has resulted in a hard-brick. Avoid flashing these files if you are trying to downgrade. The safer option is to find a custom Stock ROM with OTA Updates disabled.

    Fastboot in Linux is not working?
    In Linux, root access is required for Fastboot and/or ADB to work.
    sudo fastboot devices​
    20
    Factory data reset via Stock Recovery:
    (1) Flash via fastboot stock recovery.img (found in firmware image zip)
    (2) Turn your phone off.
    (3) Press and hold Volume DOWN + POWER.
    (4) In recovery menu press Volume down twice.
    (5) Press power. You will see a red exclamation mark.
    (6) Hold power down, then tap Volume UP.
    (7) Go to Wipe data / Factory reset and press power button.
    (8) Scroll to Yes - delete all user data and press power.​
    4
    Yes and no.
    I mean reflashing same firmware.
    If I reflash same firmware, but only system partition (or all files), I think it could work (to unroot) without erasing anything.
    In nexus 7, reflashing same firmware without erasing user data is the right way to unroot.

    Three days ago I upgraded from 5.1 to 6.0 without performing 'Factory data reset' and Android boots ok
    With Moto G (3rd Gen) in particular - not doing a 'factory data reset' has prevented Android booting for many people. It's also my experience with Moto G generally that not erasing userdata can introduce a wide range of issues, from very minor to very serious. I am now of the opinion that if you have not done a 'Factory data reset' in Android and erased userdata during fastboot flashing - you have not flashed Android properly. For best performance / experience, do what I say.
    3
    @lost101, do you think the downgrade could result if we flash only gtp.bin and bootloader (it will flash the old bootloader), reboot to bootloader (the old one now) and then flash the other partitions?
    Sorry if this is a stupid question.
    The last thing you should ever do is touch the Bootloader on a device. It's completely unnecessary and stupidly dangerous.

    These are the only commands required:
    fastboot flash boot boot.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 modem NON-HLOS.bin
    fastboot erase modemst1
    fastboot erase modemst2
    fastboot flash fsg fsg.mbn
    fastboot erase cache
    fastboot erase userdata
    fastboot reboot​

    If not booting, add the following command at the beginning of list:
    fastboot flash partition gpt.bin​