Tutorial| Fixing "Fastboot mode started"

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SaharLevi

Member
Jul 1, 2012
27
7
I've saw a lot of these posts and I also had the same Issue.
first of all I'm not taking any responsible for this, but it worked for me so.. you can at least try if you have no option left.
please note thatYOU WILL LOSE EVERYTHING on the internal storage of your LG G3!
IF YOU DON'T HAVE ACCESS TO DOWNLOAD MODE :
Please get yourself the right LAF file for your phone and insert it into the adb.exe and the fastboot.exe folder (if you don't know what I talk about please download Android SDK platform)
press Ctrl+Shift and right click inside the folder and choose Open Command window here (http://img5013.photobox.co.uk/11895...2cd987792512dcafe1c9acf628a3ef5b3a604bc5f.jpg)
Now at the CMD window that opened Type :
fastboot erase recovery
PLESAE MAKE SURE YOU DOWNLOADED THE RIGHT LAF FILE FOR YOUR PHONE before attempting this (at the same android version)
fastboot erase laf
fastboot flash laf laf.img
Click to expand...
Click to collapse
If you can't find the LAF file for your phone you'll have to Extract it from the KDZ file using this Tool http://xdaforums.com/showthread.php?t=2600575
Now you can accesses the download mode by restarting the phone.
Take the battery and the Sync cable out
while pressing the +Vol button insert the battery and the cable while continuing holding it


IF YOU HAVE ACCESS TO DOWNLOAD MODE :

Please download the TOT and .Dll files specifically for your phone from here: http://downloadandroidfiles.org/Files/LG G3/Stock Files/

after that follow this video and you're all good :
http://www.youtube.com/watch?v=1VVms7SdM04
 
Last edited:
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Z

zakiyy

Senior Member
Dec 1, 2008
165
11
SaharLevi said:
I've saw a lot of these posts and I also had the same Issue.
first of all I'm not taking any responsible for this, but it worked for me so.. you can at least try if you have no option left.
please note thatYOU WILL LOSE EVERYTHING on the internal storage of your LG G3!
IF YOU DON'T HAVE ACCESS TO DOWNLOAD MODE :
Please get yourself the right LAF file for your phone and insert it into the adb.exe and the fastboot.exe folder (if you don't know what I talk about please download Android SDK platform)
press Ctrl+Shift and right click inside the folder and choose Open Command window here (http://img5013.photobox.co.uk/11895...2cd987792512dcafe1c9acf628a3ef5b3a604bc5f.jpg)
Now at the CMD window that opened Type :

If you can't find the LAF file for your phone you'll have to Extract it from the KDZ file using this Tool http://xdaforums.com/showthread.php?t=2600575
Now you can accesses the download mode by restarting the phone.
Take the battery and the Sync cable out
while pressing the +Vol button insert the battery and the cable while continuing holding it


IF YOU HAVE ACCESS TO DOWNLOAD MODE :

Please download the TOT and .Dll files specifically for your phone from here: http://downloadandroidfiles.org/Files/LG G3/Stock Files/

after that follow this video and you're all good :
http://www.youtube.com/watch?v=1VVms7SdM04
Click to expand...
Click to collapse
Am getting this ERROR :

D:\--- MOBILE\Android\android\platform-tools>fastboot erase laf
erasing 'laf'...
FAILED (remote: failed to erase partition
)
finished. total time: 5.035s
Click to expand...
Click to collapse
 
twisted_twice

twisted_twice

Senior Member
Jan 28, 2013
123
32
lima
SaharLevi said:
I've saw a lot of these posts and I also had the same Issue.
first of all I'm not taking any responsible for this, but it worked for me so.. you can at least try if you have no option left.
please note thatYOU WILL LOSE EVERYTHING on the internal storage of your LG G3!
IF YOU DON'T HAVE ACCESS TO DOWNLOAD MODE :
Please get yourself the right LAF file for your phone and insert it into the adb.exe and the fastboot.exe folder (if you don't know what I talk about please download Android SDK platform)
press Ctrl+Shift and right click inside the folder and choose Open Command window here (http://img5013.photobox.co.uk/11895...2cd987792512dcafe1c9acf628a3ef5b3a604bc5f.jpg)
Now at the CMD window that opened Type :

If you can't find the LAF file for your phone you'll have to Extract it from the KDZ file using this Tool http://xdaforums.com/showthread.php?t=2600575
Now you can accesses the download mode by restarting the phone.
Take the battery and the Sync cable out
while pressing the +Vol button insert the battery and the cable while continuing holding it


IF YOU HAVE ACCESS TO DOWNLOAD MODE :

Please download the TOT and .Dll files specifically for your phone from here: http://downloadandroidfiles.org/Files/LG G3/Stock Files/

after that follow this video and you're all good :
http://www.youtube.com/watch?v=1VVms7SdM04
Click to expand...
Click to collapse
hi, just one nooby question. where are the adb.exe and the fastboot exe folders?
 
S

SaharLevi

Member
Jul 1, 2012
27
7
Hi Mate, It's not noobie at all.
You need to download the Android Debug Bridge (ADB) from this Link :http://developer.android.com/sdk/index.html
Ticket the platform-tools you don't need the rest
Or you can have the easy way and Download it from here: http://xdaforums.com/showthread.php?t=2588979

Or maybe you don't know where are the specific folder in which case go to where you installed it. mine is at C:\Users\Sahar\platform-tools

And on the way download the LG G3 drivers from LG download center or from this link: http://tool.xcdn.gdms.lge.com/dn/downloader.dev?fileKey=UW00120120425
 
Last edited:
jcfunk

jcfunk

Senior Member
Mar 18, 2008
901
500
@SaharLevi
Here's the fix Quick and easy
need to have fastboot, I used ubuntu can install with sudo apt-get install android-tools-fastboot
info on fastboot
[TOOL] [WINDOWS] ADB, Fastboot and Drivers - 15 seconds ADB Installer
also need recovery.img, I used the lastest twrp

In terminal
fastboot boot recovery.img

this will boot your phone with the img on your computer.

in recovery restore or install a good boot or kernel.
your phone should be good to go after that.
I had my phone fixed in about 5 min, I really should not play around with boot partition.

Also should be able to flash boot if you have a good one,
fastboot flash boot boot.img
 
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B

bartcoop2

Member
Mar 2, 2015
14
3
I have a weird problem, i'm in fastboot, and my laptop sees the phone, but none of the fastboot commands work. They get echoed on the screen and appear to be working but they don't do anything. I've tried flashing, rebooting... pretty much everything, and nothing happens.
 
jcfunk

jcfunk

Senior Member
Mar 18, 2008
901
500
bartcoop2 said:
I have a weird problem, i'm in fastboot, and my laptop sees the phone, but none of the fastboot commands work. They get echoed on the screen and appear to be working but they don't do anything. I've tried flashing, rebooting... pretty much everything, and nothing happens.
Click to expand...
Click to collapse
can you show the commands you typed?
 
B

bartcoop2

Member
Mar 2, 2015
14
3
jcfunk said:
can you show the commands you typed?
Click to expand...
Click to collapse

I navigate into a folder with all my img files and then tried a few things:
fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot boot boot.img
fastboot flash laf laf.img

I've also tried to erase a few times, and even reboot, and nothing happens, even though it says on the lg screen that it's rebooting.
 
KingOfDope

KingOfDope

Senior Member
Aug 11, 2013
578
148
25
Emmeloord
twitter.com
Samsung Galaxy S23 Plus
bartcoop2 said:
I navigate into a folder with all my img files and then tried a few things:
fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot boot boot.img
fastboot flash laf laf.img

I've also tried to erase a few times, and even reboot, and nothing happens, even though it says on the lg screen that it's rebooting.
Click to expand...
Click to collapse

try

adb fastboot flash recovery [located recovery file]
or
./adb fastboot flash recovery [located recovery file]
 
B

bartcoop2

Member
Mar 2, 2015
14
3
KingOfDope said:
try

adb fastboot flash recovery [located recovery file]
or
./adb fastboot flash recovery [located recovery file]
Click to expand...
Click to collapse

I'm assuming you meant just fastboot, adb fastboot just prints out help.

It says:
Code: 
target reported max download size of 2147483648 bytes
sending 'recovery' (11496 KB)...
OKAY [  0.362s]
writing 'recovery'...

and on the phone it says [7164300] fastboot: flash:recovery
But nothing happens. It's as if fastboot is broken.
 
jcfunk

jcfunk

Senior Member
Mar 18, 2008
901
500
bartcoop2 said:
I navigate into a folder with all my img files and then tried a few things:
fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot boot boot.img
fastboot flash laf laf.img

I've also tried to erase a few times, and even reboot, and nothing happens, even though it says on the lg screen that it's rebooting.
Click to expand...
Click to collapse
Type from folder with recovery.img

fastboot boot recovery.img

if it a bumped recovery, it should boot into recovery. Then you should be able to restore a backup
 
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B

bartcoop2

Member
Mar 2, 2015
14
3
jcfunk said:
Type from folder with recovery.img

fastboot boot recovery.img

if it a bumped recovery, it should boot into recovery. Then you should be able to restore a backup
Click to expand...
Click to collapse

I've tried that, i think my fastboot is somehow corrupt, i guess i have a hard-brick, i hope LG will replace it.

Thanks for your help
 
jcfunk

jcfunk

Senior Member
Mar 18, 2008
901
500
bartcoop2 said:
I've tried that, i think my fastboot is somehow corrupt, i guess i have a hard-brick, i hope LG will replace it.

Thanks for your help
Click to expand...
Click to collapse
also have you tried a different usb cable? Mine stop working after a month. Only charges phone but won't connect to computer

Sent from my tf700t using Tapatalk
 
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  • 7
    S
    SaharLevi
    I've saw a lot of these posts and I also had the same Issue.
    first of all I'm not taking any responsible for this, but it worked for me so.. you can at least try if you have no option left.
    please note thatYOU WILL LOSE EVERYTHING on the internal storage of your LG G3!
    IF YOU DON'T HAVE ACCESS TO DOWNLOAD MODE :
    Please get yourself the right LAF file for your phone and insert it into the adb.exe and the fastboot.exe folder (if you don't know what I talk about please download Android SDK platform)
    press Ctrl+Shift and right click inside the folder and choose Open Command window here (http://img5013.photobox.co.uk/11895...2cd987792512dcafe1c9acf628a3ef5b3a604bc5f.jpg)
    Now at the CMD window that opened Type :
    fastboot erase recovery
    PLESAE MAKE SURE YOU DOWNLOADED THE RIGHT LAF FILE FOR YOUR PHONE before attempting this (at the same android version)
    fastboot erase laf
    fastboot flash laf laf.img
    Click to expand...
    Click to collapse
    If you can't find the LAF file for your phone you'll have to Extract it from the KDZ file using this Tool http://xdaforums.com/showthread.php?t=2600575
    Now you can accesses the download mode by restarting the phone.
    Take the battery and the Sync cable out
    while pressing the +Vol button insert the battery and the cable while continuing holding it


    IF YOU HAVE ACCESS TO DOWNLOAD MODE :

    Please download the TOT and .Dll files specifically for your phone from here: http://downloadandroidfiles.org/Files/LG G3/Stock Files/

    after that follow this video and you're all good :
    http://www.youtube.com/watch?v=1VVms7SdM04
    View
    5
    jcfunk
    jcfunk
    @SaharLevi
    Here's the fix Quick and easy
    need to have fastboot, I used ubuntu can install with sudo apt-get install android-tools-fastboot
    info on fastboot
    [TOOL] [WINDOWS] ADB, Fastboot and Drivers - 15 seconds ADB Installer
    also need recovery.img, I used the lastest twrp

    In terminal
    fastboot boot recovery.img

    this will boot your phone with the img on your computer.

    in recovery restore or install a good boot or kernel.
    your phone should be good to go after that.
    I had my phone fixed in about 5 min, I really should not play around with boot partition.

    Also should be able to flash boot if you have a good one,
    fastboot flash boot boot.img
    View
    2
    S
    superguy19
    topsakal said:
    how can i get that file? i extracted kdz file with LGfirmware extract. but i didnt find laf.img file...

    can you help mr please...

    thanks
    Click to expand...
    Click to collapse

    TOOLS REQUIREMENT

    LG FLASH TOOL FOR KDZ AND TOT FILE(*http://xdaforums.com/show....php?t=2432476


    (CREDIT GOES TO HYELTON)

    TOT OR KDZ FILE ( DEPENDING ON SITUATION) >>>>>>>>>>( KEEPING BOTH FILES RECOMMENDED)


    LG FIRMWARE EXTRACTOR*(*http://xdaforums.com/show....php?t=2600575) >>>>>>>>>>>> ( DOWNLOAD LATEST VERSION)


    ANDROID SDK SLIM*(*http://d-h.st/08w) >>>>>>>>>>>> ( USEFULL TO UNBRICK PHONE IN FASTBOOT MODE)


    QUALCOMM DRIVER*(http://www.mediafire.com/download/pb...SB+Drivers.rar*)>>>>>>>> ( for qhsusb bulk mode)


    PDANET FOR ADB DRIVER*(*http://pdanet.co/a/)*


    IF YOU FLASHED WRONG RECOVERY OR MODIFY PARTITION THEN YOU WILL STUCK IN FASTBOOT
    SOLUTION FOR FASTBOOT
    EXTRACT ANDROIDSDKSLIM.ZIP FILE ON DESKTOP ( ANY WHERE)
    INSTALL PDANET AND CHOOSE LG COMPLETE INSTALLATION
    DOWNLOAD PARTITION FILE FOR YOUR MODEL ( IF D802 THEN USE ONLY PARTITION FILE FOR D802) >>>>>>>>>> (*http://downloads.codefi.re/autoprime/LG/LG_G2)

    NOTE : 1) YOU CAN EXTRACT PARTITION FILE FROM KDZ OR TOT FILE USING LGFIRMWARE EXTRACTOR TOOL
    FOLLOW THIS VIDEO TO KNOW HOW TO EXTRACT PARTITION FILE
    2) PARTITION FILE MUST BE IN .img FORMAT ( WHEN WE EXTRACT PARTITION FILE FROM KDZ OR TOT THEN IT IS IN .bin FORMAT SO SIMPLY RENAME FROM .bin to .img )
    3) YOU NEED TO EXTRACT 10 FILES FROM TOT ( aboot, boot, sbl1, dbi, laf, recovery, modem, misc, rpm, tz ) and 9 FILES FROM KDZ ( misc file is not present in kdz so dont worry it is not important)

    AFTER EXTRACTING PARTITION FILE AND RENAMING THEM YOU WILL GET 10 OR 9 FILE ( aboo.img, boot.img, laf.img, recovery.img, sbl1.img, dbi.img, rpm.img, tz.img, misc.img) and REMOVE ANY NUMBER FROM THE NAME OF FILES ( SUPPOSE YOU GET aboot_21345.bin THEN RENAME TO aboot.img)

    NOW COPY THESE PARTITION FILE IN THE LAST FOLDER (PLATFORM-TOOLS) OF ANDROIDSDKSLIM FOLDER.
    NOW CONNECT YOUR PHONE TO PC IN FASTBOOT MODE ( OPEN DEVICE MANAGER AND SEE ON THE TOP THERE WILL ANDROID ADB INTERFACE UNDER ANDROID PHONE. IF NOT THEN CHECK ADB DRIVER INSTALLED PROPERLY OR NOT.

    NOW GO TO THE THE FOLDER PLATFORM -TOOL INSIDE ANDROIDSDKSLIM FOLDER.
    NOW PRESS AND HOLD SHIFT BUTTON ON KEYBOARD AND RIGHT CLICK IN THAT FOLDER AND YOU WILL GET AN OPTION OPEN COMMAND PROMPT OR WINDOW HERE. CLICK ON IT AND YOU WILL GET CMD WINDOW.
    NOW TYPE fastboot devices ( IT WILL SHOW YOUR DEVICES )
    NOW TYPE THESE COMMAND

    fastboot erase recovery
    fastboot erase laf*
    fastboot flash laf laf.img
    fastboot reboot
    exit

    NOW REMOVE USB CABLE AND SWITCH OFF YOUR PHONE BT LONG PRESSING POWER BUTTON
    NOW PRESS AND HOLD VOL UP AND CONNECT TO PC AND YOU WILL GET DOWNLOAD MODE FIXED
    HURREYYYYYYYYYYYYYY
    GO AND FLASH STOCK ROM (*http://xdaforums.com/show....php?t=2432476)

    IF YOU STILL STUCK IN FASTBOOT MODE THEN TYPE THESE COMMAND ( erase all 10 or 9 file and flash them one by one as shown)

    fastboot erase aboot ( this command will erase aboot.img from phone)
    fastboot flash aboot aboot.img ( this command will flash aboot to phone )
    fastboot erase boot
    fastboot flash boot boot.img*
    fastboot erase laf
    fastboot flash laf laf.img*
    fastboot erase rpm
    fastboot flash rpm rpm.img
    fastboot erase recovery
    fastboot flash recovery recovery.img*
    fastboot erase modem
    fastboot flash modem modem.img*
    fastboot erase misc
    fastboot flash misc misc.img
    fastboot erase sbl1
    fastboot flash sbl1 sbl1.img
    fastboot erase tz
    fastboot flash tz tz.img
    fastboot erase dbi
    fastboot flash dbi dbi.img
    fastboot reboot
    exit

    NOW REMOVE USB CABLE AND SWITCH OFF YOUR PHONE BT LONG PRESSING POWER BUTTON
    NOW PRESS AND HOLD VOL UP AND CONNECT TO PC AND YOU WILL GET DOWNLOAD MODE FIXED
    HURREYYYYYYYYYYYYYY
    GO AND FLASH STOCK ROM (*http://xdaforums.com/show....php?t=2432476)
    View
    1
    jcfunk
    jcfunk
    bartcoop2 said:
    I navigate into a folder with all my img files and then tried a few things:
    fastboot flash recovery recovery.img
    fastboot flash boot boot.img
    fastboot boot boot.img
    fastboot flash laf laf.img

    I've also tried to erase a few times, and even reboot, and nothing happens, even though it says on the lg screen that it's rebooting.
    Click to expand...
    Click to collapse
    Type from folder with recovery.img

    fastboot boot recovery.img

    if it a bumped recovery, it should boot into recovery. Then you should be able to restore a backup
    View
    1
    jcfunk
    jcfunk
    bartcoop2 said:
    I've tried that, i think my fastboot is somehow corrupt, i guess i have a hard-brick, i hope LG will replace it.

    Thanks for your help
    Click to expand...
    Click to collapse
    also have you tried a different usb cable? Mine stop working after a month. Only charges phone but won't connect to computer

    Sent from my tf700t using Tapatalk
    View

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