Database Users

Rooted ZE551ML pre-image

I've follow instrucctions from this site to flash rooted pre-image to my phone:
http://www.asus-zenfone.com/2015/04/asus-zenfone-2-pre-root-systemimg.html
But no luck, I'm stucked after enter "flash system system.img" get <waiting for device> for ever, any idea how to continue?

Did you allow adb device on your phone. Did you install driver?

Yes I did, I did "adb devices" and returns my phone serial number.

Dumb question, did you reboot into bootloader?

Thanks for your help, but I did it, and get this message: "target reported max download size of 536870912 bytes"

U in Windows?

Yes, window 8.1
Sent from my ASUS_Z00AD using XDA Free mobile app

I did it on Linux but shouldn't be any different. Just put phone on bootloader mode, extract image to platform tools Folder and fastboot flash system system.img

afrugone said:
Thanks for your help, but I did it, and get this message: "target reported max download size of 536870912 bytes"
Click to expand...
Click to collapse
Just wait a few minutes, then the file will begin to transfer with log like this:
target reported max download size of 536870912 bytes
erasing "system"...
OKAY [ 6.014S]
sending sparse 'system' <524257 KB>
OKAY [528.321S]
sending sparse 'system'.....
............
It's a long process (maybe because I doesn't use the original cable by ASUS).

Thanks TieuphongDN,
Whe I got the the message "target reported max download size of 536870912 bytes" I thought that something was wrong, I wait as you told, and could flash the rom, thanks for your help

I was able to successfully root and update firmware from CN to WW using that tutorial and this thread too. Thank you!

hkdmjack said:
I was able to successfully root and update firmware from CN to WW using that tutorial and this thread too. Thank you!
Click to expand...
Click to collapse
so after u updated firmware CM to WW ..... can u go on 4G?? LTE??

hermieee said:
so after u updated firmware CM to WW ..... can u go on 4G?? LTE??
Click to expand...
Click to collapse
Nope, still working on that but I'm a novice at best at this so I'll keep trying things as new methods come out. H+ is more than sufficient now for the most part though.

FAILED (remote: Permission denied!)

Hi guys,
I need some help, I'm rooted running on the stock rom.
I was running the 6.0 L and decided to update to 6.0.1 vie fastboot.
I followed this guide (http://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928) section 10- and did the exact same thing.
Every thing was flashing fine till I reached system.img and this is what I get.
C:\SDK\android-sdk-windows\platform-tools\6.0.1>fastboot flash sysytem C:\SDK\android-sdk-windows\platform-tools\6.0.1\system.img
target reported max download size of 494927872 bytes
sending sparse 'sysytem' (463062 KB)...
OKAY [ 10.395s]
writing 'sysytem'...
FAILED (remote: Permission denied!)
finished. total time: 10.410s
I did not flash the recovery because it says it's optional. I proceeded with the vendor and rebooted the device. When the device starts I get a pop up saying : There's an internal problem with your device. Contact your manufacture for details.
In the setting im still on 6.0 L build but bootloader and radios are on the latest firmware.
any suggestions?
Thanks
I did some search and couldn't find a decent answer.

If this is copy/paste directly from Terminal, then you misspelled "system" in your initial command:
C:\SDK\android-sdk-windows\platform-tools\6.0.1>fastboot flash sysytem C:\SDK\android-sdk-windows\platform-tools\6.0.1\system.img
target reported max download size of 494927872 bytes
sending sparse 'sysytem' (463062 KB)...
OKAY [ 10.395s]
writing 'sysytem'...
FAILED (remote: Permission denied!)
finished. total time: 10.410s
Click to expand...
Click to collapse
Notice the bold, the command is looking for "sysytem" which does not exist. You'll be good to go, if the typo is removed.

SlimSnoopOS said:
If this is copy/paste directly from Terminal, then you misspelled "system" in your initial command:
Notice the bold, the command is looking for "sysytem" which does not exist. You'll be good to go, if the typo is removed.
Click to expand...
Click to collapse
:| facepalm...... thanks man, I should not flash things at 1 AM.
I assume I dont need to flash the BL and radios again? just wipe cache install boot, system and vendor?

mr.dj26 said:
:| facepalm...... thanks man, I should not flash things at 1 AM.
I assume I dont need to flash the BL and radios again? just wipe cache install boot, system and vendor?
Click to expand...
Click to collapse
Correct, as long as you flashed the proper bootloader and radio. Just keep it all matching and you should be set. I try to avoid doing phone tinkering at night lol just never feel like troubleshooting at that time if I mess up.
Sent from my Nexus 5X using Tapatalk

SlimSnoopOS said:
Correct, as long as you flashed the proper bootloader and radio. Just keep it all matching and you should be set. I try to avoid doing phone tinkering at night lol just never feel like troubleshooting at that time if I mess up.
Sent from my Nexus 5X using Tapatalk
Click to expand...
Click to collapse
lol, ya i'm falling asleep so i'll do it tomorrow, thanks again and good night.

[HELP] Bricked LG G6 US997, Need help

Hey everyone, I just bricked my LG G6. I was trying to use Uppercut and LGUP to flash a stock firmware, but it wouldn't detect my phone, so i followed this post: https://forum.xda-developers.com/showpost.php?p=70446385&postcount=70
Once I did that and restarted my phone, it got stuck in bootloop and it will display this: "Your device has failed routine safety check and will not boot."
Right now, I can only access fastboot and download mode, but download mode doesn't stick and my PC doesn't detect the phone in download mode, only Fastboot. I can't enter recovery.
Please help guys I don't want my phone to be scrap metal
P.S.: Was running LineageOS prior to bootloop.

Have you tried flashing anything from fastboot?

If you phone has bootloader unlocked then flash twrp via fastboot. If not contact LG for a service
---------- Post added at 07:00 AM ---------- Previous post was at 06:59 AM ----------
Also wiping misc is a very bad idea

boksquare said:
Hey everyone, I just bricked my LG G6. I was trying to use Uppercut and LGUP to flash a stock firmware, but it wouldn't detect my phone, so i followed this post: https://forum.xda-developers.com/showpost.php?p=70446385&postcount=70
Once I did that and restarted my phone, it got stuck in bootloop and it will display this: "Your device has failed routine safety check and will not boot."
Right now, I can only access fastboot and download mode, but download mode doesn't stick and my PC doesn't detect the phone in download mode, only Fastboot. I can't enter recovery.
Please help guys I don't want my phone to be scrap metal
P.S.: Was running LineageOS prior to bootloop.
Click to expand...
Click to collapse
Did you relock the bootloader ?

cory733 said:
Have you tried flashing anything from fastboot?
Click to expand...
Click to collapse
No I have not. Should I? What should I flash thru fastboot?
jimbomodder said:
If you phone has bootloader unlocked then flash twrp via fastboot. If not contact LG for a service
Ok I will try that
---------- Post added at 07:00 AM ---------- Previous post was at 06:59 AM ----------
Also wiping misc is a very bad idea
Click to expand...
Click to collapse
numpea said:
Did you relock the bootloader ?
Click to expand...
Click to collapse
No I did not. Should I? I bricked my HTC One once doing this and I remember locking bootloader would make things harder to fix for me.

Sometimes getting the phone detected in download mode can be tricky, often you will have to play around with different usb cables and / or computers.
I would try flashing TWRP in fastboot. See if you can get into TWRP, then you can try flashing a rom.

cory733 said:
Sometimes getting the phone detected in download mode can be tricky, often you will have to play around with different usb cables and / or computers.
I would try flashing TWRP in fastboot. See if you can get into TWRP, then you can try flashing a rom.
Click to expand...
Click to collapse
I don't really have lots of USB cables or computers at my disposal though.. Do I just keep trying until it works, and even if so, how do I know when the phone is detected in download mode?
I also found out that even though I can enter fastboot, my bootloader is somehow locked again, and I can't flash the unlock bin so I can't even get a custom recovery to be flashed on there. Any other ideas or is my phone dead for good?

New update:
- I entered fastboot and tried flashing TWRP but bootloader is locked. Tried to flash unlock bin but i get this:
target reported max download size of 536870912 bytes
sending 'unlock' (1 KB)...
OKAY [ 0.039s]
writing 'unlock'...
(bootloader) Error!!
(bootloader) Bootloader Unlock key write fail
FAILED (remote failure)
finished. total time: 0.080s
I'm super desperate at this point. Will LG fix my device if I send it to them? I know warranty is out the window but would they fix it for a payment?

boksquare said:
New update:
- I entered fastboot and tried flashing TWRP but bootloader is locked. Tried to flash unlock bin but i get this:
target reported max download size of 536870912 bytes
sending 'unlock' (1 KB)...
OKAY [ 0.039s]
writing 'unlock'...
(bootloader) Error!!
(bootloader) Bootloader Unlock key write fail
FAILED (remote failure)
finished. total time: 0.080s
I'm super desperate at this point. Will LG fix my device if I send it to them? I know warranty is out the window but would they fix it for a payment?
Click to expand...
Click to collapse
maybe you locked the bootloader at some point with twrp !
maybe your unlock.bin is corrupted you need either unlock bootloader or try to flash kdz via download mode accessing
if you can't do that, LG center is the only way good luck

Why were you originally trying to flash stock firmware?

cory733 said:
Why were you originally trying to flash stock firmware?
Click to expand...
Click to collapse
I realized the visual appeal of custom OSes no longer attract me as much as full usability (Using google pay or fingerprint in some apps) and stability as I used to when I was young. I wanted to flash stock firmware and just keep root and xposed to enhance my stock experience.

Update 2:
I contacted LG and they quoted me a minimum of $300 and up for repairs.. Really hope someone has a fix to my issue or any other suggestions. I'm thinking about taking to a phone repair store but I doubt they will be able to fix this. I live in Houston, TX area if anybody has store suggestions. Thank you

So what rom were you on? And how did you flash it without TWRP? Can you go through from start to finish exactly what you did?

my h872 is brick,even though the download mode and system,anyone could help me?

my h872 is brick,even though the download mode and system,now i can only boot into the fastboot,how can i get my phone work?
i have tried fastboot flash command to flash boot or recovery ,etc,it always show:
sending 'bootloader'
ok,
target reported max download size of 536870912 bytes
sending 'laf' (29916 KB)...
OKAY [ 1.029s]
writing 'laf'...
FAILED (remote: unknown command)
finished. total time: 1.050s
might my drives is not proper? i have change the usb point or another device,it always is this...

小阿瑟 said:
my h872 is brick,even though the download mode and system,now i can only boot into the fastboot,how can i get my phone work?
i have tried fastboot flash command to flash boot or recovery ,etc,it always show:
sending 'bootloader'
ok,
target reported max download size of 536870912 bytes
sending 'laf' (29916 KB)...
OKAY [ 1.029s]
writing 'laf'...
FAILED (remote: unknown command)
finished. total time: 1.050s
might my drives is not proper? i have change the usb point or another device,it always is this...
Click to expand...
Click to collapse
How'd you get here? (Your phone bricked)

christopherrrg said:
How'd you get here? (Your phone bricked)
Click to expand...
Click to collapse
i use the twrp flash a wrong recover or maybe wrong root？mostly it is ，

小阿瑟 said:
i use the twrp flash a wrong recover or maybe wrong root？mostly it is ，
Click to expand...
Click to collapse
I just asked because the logs show that your LAF partition isn't flashing and from what I've been reading so far about the LAF partition is that it is a very fragile thing.
Have you tried a factory kdz with LGUP?

christopherrrg said:
I just asked because the logs show that your LAF partition isn't flashing and from what I've been reading so far about the LAF partition is that it is a very fragile thing.
Have you tried a factory kdz with LGUP?
Click to expand...
Click to collapse
what a amazing ! i got another‘s help,now i can boot into the twrp,
but after i install the AospExtended, it just play the aex booting video,how many times i erase all date include system and date,cache,etc.
now ,iwant to konw how to get it into a system

Find stock.kdz to flash using LGUP, reflash TWRP using fast boot commands. Should boot correctly after stock .kdz is applied. Once confirmed your phone works correctly.. Boot into TWRP factory reset, and wipe partition, then attempt to flash your choice of custom ROM.

小阿瑟 said:
what a amazing ! i got another‘s help,now i can boot into the twrp,
but after i install the AospExtended, it just play the aex booting video,how many times i erase all date include system and date,cache,etc.
now ,iwant to konw how to get it into a system
Click to expand...
Click to collapse
Hi mate,
I got into the same problem as u did, i hope you solved your problem by now. Will share to me how you solve it?
Did u flash twrp via fastboot? If u do, can you share to me the command u used?
Thanks alot for your help.

spaceantz said:
Hi mate,
I got into the same problem as u did, i hope you solved your problem by now. Will share to me how you solve it?
Did u flash twrp via fastboot? If u do, can you share to me the command u used?
Thanks alot for your help.
Click to expand...
Click to collapse
Download mode via holding VOL+ and plug in GOOD USB-C cable into Windows 10 laptop/desktop with LG USB drivers, Uppercut, LGUP installed. Then KDZ 10E image to bring back to stock Nougat (losing all root, data, and it'll force encryption): http://firmware-up.com/system/files/basicpr/8d0e1fc8/H87210e_00_0322.kdz

LG G6 H872 stucked in Download mode with 5 dots
My phone LG G6 H872 got stucked in download mode with 5 dots in the process of getting it rooted, pls anyone with information on how to get it out of this should pls help. you can mail me direct on [email protected]

[HELP] ZE550KL stuck in fastboot mode, no system, no boot, no recovery.

My zenfone 2 laser are stuck in fastboot mode, can't go to recovery or any thing, using the adb and fastboot i can flash boot.img, system.img etc. but nothing happens. and the bootloader are locked too, and i don't find some way to unlock without the app from asus, tried to put 'fastboot oem get_unlock_ability' or 'fastboot oem unlock' but i just receive 'FAILED (remote: 'unknown command')'
i don't know what to do, someone know what i can do? pls

Reflash ofw via adb with stock boot/recovery
lukk321 said:
My zenfone 2 laser are stuck in fastboot mode, can't go to recovery or any thing, using the adb and fastboot i can flash boot.img, system.img etc. but nothing happens. and the bootloader are locked too, and i don't find some way to unlock without the app from asus, tried to put 'fastboot oem get_unlock_ability' or 'fastboot oem unlock' but i just receive 'FAILED (remote: 'unknown command')'
i don't know what to do, someone know what i can do? pls
Click to expand...
Click to collapse
Hi dude try flash boot and recovery from h**ps://drive.google.com/folderview?id=0B0aDjdU4gTwZRWxzLWxhYUZPbVk&usp=drive_web
then reboot holding volume down button once done should have recovery menu select install through adb sideload etc
download fw from here: h**ps://dlcdnets.asus.com/pub/ASUS/ZenFone/ZS550KL/UL-Z00L-WW-21.40.1220.2196-user.zip?_ga=2.175867362.1367738333.1539164489-1033220152.1538417076[/
then on pc copy downloaded fw to adb folder and type: adb sideload UL-Z00L-WW-21.40.1220.2196-user.zip
[/B]
and will begin to install and hope all goes well and good luck

Hi man, thank you for reply
Foggalias said:
Hi dude try flash boot and recovery from h**ps://drive.google.com/folderview?id=0B0aDjdU4gTwZRWxzLWxhYUZPbVk&usp=drive_web
then reboot holding volume down button once done should have recovery menu select install through adb sideload etc
download fw from here: h**ps://dlcdnets.asus.com/pub/ASUS/ZenFone/ZS550KL/UL-Z00L-WW-21.40.1220.2196-user.zip?_ga=2.175867362.1367738333.1539164489-1033220152.1538417076[/
then on pc copy downloaded fw to adb folder and type: adb sideload UL-Z00L-WW-21.40.1220.2196-user.zip
[/B]
and will begin to install and hope all goes well and good luck
Click to expand...
Click to collapse
But i alredy try to flash boot, recovery, twrp, even try use flashall.bat, but my bootloader are locked, so when i type 'fastboot flash recovery recovery.img' it appears that worked, but when i try to go to recovey, the phone just shows the asus logo with 'fastboot mode' on the top, even typing 'fastboot reboot-bootloader' or 'fastboot reboot' while holding the volume down button, it don't work. And typing 'fastboot getvar recovery or boot' shows nothing.
Probably i need to unlock the bootloader first, but i don't know how to do that.

lukk321 said:
But i alredy try to flash boot, recovery, twrp, even try use flashall.bat, but my bootloader are locked, so when i type 'fastboot flash recovery recovery.img' it appears that worked, but when i try to go to recovey, the phone just shows the asus logo with 'fastboot mode' on the top, even typing 'fastboot reboot-bootloader' or 'fastboot reboot' while holding the volume down button, it don't work. And typing 'fastboot getvar recovery or boot' shows nothing.
Probably i need to unlock the bootloader first, but i don't know how to do that.
Click to expand...
Click to collapse
sorry to hear dude and sorry for late reply I'm sure I used the app to unlock my boot loader ill do a bit of digging if I find anything
---------- Post added at 11:48 PM ---------- Previous post was at 11:36 PM ----------
Foggalias said:
sorry to hear dude and sorry for late reply I'm sure I used the app to unlock my boot loader ill do a bit of digging if I find anything
Click to expand...
Click to collapse
hi dude try here its flashing tarp without unlocking boot loader and its through fastboot mode
h***s:/.asus.com/zentalk/in/thread-128115-1-1.html
---------- Post added 11th October 2018 at 12:10 AM ---------- Previous post was 10th October 2018 at 11:48 PM ----------
Foggalias said:
sorry to hear dude and sorry for late reply I'm sure I used the app to unlock my boot loader ill do a bit of digging if I find anything
---------- Post added at 11:48 PM ---------- Previous post was at 11:36 PM ----------
hi dude try here its flashing tarp without unlocking boot loader and its through fastboot mode
h***s:/.asus.com/zentalk/in/thread-128115-1-1.html
Click to expand...
Click to collapse
try this unlock bloody via fastboot
h***s://drive.google.com/file/d/0ByzlvYYhluSdR3ZpdWYzX1ZfRUE/view?usp=drivesdk

Hi again dude how u getting on? I remember when I used the unlock tool app it just rebooted and nothing looked different at all and the only way I found putTit was u locked was on fastboot mode using this command:
fastboot oem device-info
Said something like bootloader unlocked: True
I'd give it a shot and hopefully its just the case of some bad img's good luck

thanks helping me
Foggalias said:
sorry to hear dude and sorry for late reply I'm sure I used the app to unlock my boot loader ill do a bit of digging if I find anything
---------- Post added at 11:48 PM ---------- Previous post was at 11:36 PM ----------
hi dude try here its flashing tarp without unlocking boot loader and its through fastboot mode
h***s:/.asus.com/zentalk/in/thread-128115-1-1.html
---------- Post added 11th October 2018 at 12:10 AM ---------- Previous post was 10th October 2018 at 11:48 PM ----------
try this unlock bloody via fastboot
h***s://drive.google.com/file/d/0ByzlvYYhluSdR3ZpdWYzX1ZfRUE/view?usp=drivesdk
Click to expand...
Click to collapse
the asus site are off now, so later i'll see that
the unlock tool look that worked, but the phone still stuck in fastboot

Foggalias said:
Hi again dude how u getting on? I remember when I used the unlock tool app it just rebooted and nothing looked different at all and the only way I found putTit was u locked was on fastboot mode using this command:
fastboot oem device-info
Said something like bootloader unlocked: True
I'd give it a shot and hopefully its just the case of some bad img's good luck
Click to expand...
Click to collapse
fastboot oem device-info shows that:
(bootloader) Device unlocked: false
(bootloader) Charger screen enabled: false
(bootloader) Display panel:
(bootloader) Adb Enable: 0
OKAY [ 0.017s]
finished. total time: 0.018s
even after using the unlock tool

Thank you for helping dude
I gonna send the phone to the support center, before i explode the phone haha, sorry for taking your time, bye.

lukk321 said:
I gonna send the phone to the support center, before i explode the phone haha, sorry for taking your time, bye.
Click to expand...
Click to collapse
no worries dude sorry coudnt sort it
---------- Post added at 12:26 PM ---------- Previous post was at 12:17 PM ----------
lukk321 said:
fastboot oem device-info shows that:
(bootloader) Device unlocked: false
(bootloader) Charger screen enabled: false
(bootloader) Display panel:
(bootloader) Adb Enable: 0
OKAY [ 0.017s]
finished. total time: 0.018s
even after using the unlock tool
Click to expand...
Click to collapse
hi dude sorry to hear but people have managed to flash boot using certain version img file and then able to flash the recovery on locked bootloaders
id say try before it costs you at service
here: https://www.asus.com/zentalk/in/thread-88877-1-1.html

Same issue with my phone but i'm getting different error
I guys,
I gone through your post and similar issue I'm facing. As suggested I tried unlock boot loader or whenever trying to flash getting below error. Can you help me to get this fix. Might be I'll recover my phone.
target reported max download size of 268435456 bytes
sending 'fastboot' (13273 KB)...
OKAY [ 0.419s]
writing 'fastboot'...
FAILED (remote: partition table doesn't exist)
finished. total time: 0.426s
rebooting into bootloader...
OKAY [ 0.001s]
finished. total time: 0.001s
Below device info i can see but still it boots into fastboot and not in recovery mode
(bootloader) Device unlocked: true
(bootloader) Charger screen enabled: false
(bootloader) Display panel:
(bootloader) Adb Enable: 0
OKAY [ 0.004s]
finished. total time: 0.004s

Hiya dude I know there's a certain fw version that it'll let u adb sideload, I take your getting this issue from trying to side load, I'll have a look and try and find fw I used. It does state device unlocked: true which I did mine using an app if I remember correctly
Are you able to flash recovery ar all ??
---------- Post added at 10:57 AM ---------- Previous post was at 10:55 AM ----------
Hiya dude again I think what u used is linked above in thread, have you tried thise by any chance?
---------- Post added at 11:02 AM ---------- Previous post was at 10:57 AM ----------
krahul99 said:
I guys,
I gone through your post and similar issue I'm facing. As suggested I tried unlock boot loader or whenever trying to flash getting below error. Can you help me to get this fix. Might be I'll recover my phone.
target reported max download size of 268435456 bytes
sending 'fastboot' (13273 KB)...
OKAY [ 0.419s]
writing 'fastboot'...
FAILED (remote: partition table doesn't exist)
finished. total time: 0.426s
rebooting into bootloader...
OKAY [ 0.001s]
finished. total time: 0.001s
Below device info i can see but still it boots into fastboot and not in recovery mode
(bootloader) Device unlocked: true
(bootloader) Charger screen enabled: false
(bootloader) Display panel:
(bootloader) Adb Enable: 0
OKAY [ 0.004s]
finished. total time: 0.004s
Click to expand...
Click to collapse
Try this dude:
https://www.asus.com/zentalk/in/forum.php?mod=viewthread&tid=128115&mobile=2
Let me know how u get on
---------- Post added at 11:09 AM ---------- Previous post was at 11:02 AM ----------
krahul99 said:
I guys,
I gone through your post and similar issue I'm facing. As suggested I tried unlock boot loader or whenever trying to flash getting below error. Can you help me to get this fix. Might be I'll recover my phone.
target reported max download size of 268435456 bytes
sending 'fastboot' (13273 KB)...
OKAY [ 0.419s]
writing 'fastboot'...
FAILED (remote: partition table doesn't exist)
finished. total time: 0.426s
rebooting into bootloader...
OKAY [ 0.001s]
finished. total time: 0.001s
Below device info i can see but still it boots into fastboot and not in recovery mode
(bootloader) Device unlocked: true
(bootloader) Charger screen enabled: false
(bootloader) Display panel:
(bootloader) Adb Enable: 0
OKAY [ 0.004s]
finished. total time: 0.004s
Click to expand...
Click to collapse
Hi dude try flash boot and recovery from here a little guide in there to (update error fix): h**ps://drive.google.com/folderview?id=0B0aDjdU4gTwZRWxzLWxhYUZPbVk&usp=drive_web
then reboot holding volume down button once done should have recovery menu select install through adb sideload etc
download fw from here: h**ps://dlcdnets.asus.com/pub/ASUS/ZenFone/ZS550KL/UL-Z00L-WW-21.40.1220.2196-user.zip?_ga=2.175867362.1367738333.1539164489-1033220152.1538417076[
then on pc copy downloaded fw to adb folder and type: adb sideload UL-Z00L-WW-21.40.1220.2196-user.zip
and will begin to install and hope all goes well and good luck

Tried this but still it comes in fastboot mode only
Yup i tried these methods earlier. It shows written but when I reboot and try to go to recovery it directly comes into Fastboot. Rather if I remove battery and just plug the usb cable even though it shows fastboot mode.
Foggalias said:
Hiya dude I know there's a certain fw version that it'll let u adb sideload, I take your getting this issue from trying to side load, I'll have a look and try and find fw I used. It does state device unlocked: true which I did mine using an app if I remember correctly
Are you able to flash recovery ar all ??
---------- Post added at 10:57 AM ---------- Previous post was at 10:55 AM ----------
Hiya dude again I think what u used is linked above in thread, have you tried thise by any chance?
---------- Post added at 11:02 AM ---------- Previous post was at 10:57 AM ----------
Try this dude:
https://www.asus.com/zentalk/in/forum.php?mod=viewthread&tid=128115&mobile=2
Let me know how u get on
---------- Post added at 11:09 AM ---------- Previous post was at 11:02 AM ----------
Hi dude try flash boot and recovery from here a little guide in there to (update error fix): h**ps://drive.google.com/folderview?id=0B0aDjdU4gTwZRWxzLWxhYUZPbVk&usp=drive_web
then reboot holding volume down button once done should have recovery menu select install through adb sideload etc
download fw from here: h**ps://dlcdnets.asus.com/pub/ASUS/ZenFone/ZS550KL/UL-Z00L-WW-21.40.1220.2196-user.zip?_ga=2.175867362.1367738333.1539164489-1033220152.1538417076[
then on pc copy downloaded fw to adb folder and type: adb sideload UL-Z00L-WW-21.40.1220.2196-user.zip
and will begin to install and hope all goes well and good luck
Click to expand...
Click to collapse

Same issue with my asus
krahul99 said:
Yup i tried these methods earlier. It shows written but when I reboot and try to go to recovery it directly comes into Fastboot. Rather if I remove battery and just plug the usb cable even though it shows fastboot mode.
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I'm facing same issue with my device.. Pls can you hlp me

Mohanking6 said:
I'm facing same issue with my device.. Pls can you hlp me
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Install recovery and boot image version 1531 then use adb sideload to flash latest version of ROM.

Foggalias said:
Reflash ofw via adb with stock boot/recovery
Hi dude try flash boot and recovery from h**ps://drive.google.com/folderview?id=0B0aDjdU4gTwZRWxzLWxhYUZPbVk&usp=drive_web
then reboot holding volume down button once done should have recovery menu select install through adb sideload etc
download fw from here: h**ps://dlcdnets.asus.com/pub/ASUS/ZenFone/ZS550KL/UL-Z00L-WW-21.40.1220.2196-user.zip?_ga=2.175867362.1367738333.1539164489-1033220152.1538417076[/
then on pc copy downloaded fw to adb folder and type: adb sideload UL-Z00L-WW-21.40.1220.2196-user.zip
[/B]
and will begin to install and hope all goes well and good luck
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I just wanted to Thank you! I was about to give up and sell the phone because ive tried all countless methods and now i have recovery mode. Thank you so much forr keeping the google drive links alive..

frenchiejoshy said:
I just wanted to Thank you! I was about to give up and sell the phone because ive tried all countless methods and now i have recovery mode. Thank you so much forr keeping the google drive links alive..
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unable to flash boot.img brother
fastboot flash fastboot boot.img
target reported max download size of 268435456 bytes
sending 'fastboot' (24547 KB)...
OKAY [ 0.775s]
writing 'fastboot'...
FAILED (remote: cannot flash this partition in locked state)
finished. total time: 0.803s

osm gkkkkkk said:
unable to flash boot.img brother
fastboot flash fastboot boot.img
target reported max download size of 268435456 bytes
sending 'fastboot' (24547 KB)...
OKAY [ 0.775s]
writing 'fastboot'...
FAILED (remote: cannot flash this partition in locked state)
finished. total time: 0.803s
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which file did you use and how

Foggalias said:
Reflash ofw via adb with stock boot/recovery
Hi dude try flash boot and recovery from h**ps://drive.google.com/folderview?id=0B0aDjdU4gTwZRWxzLWxhYUZPbVk&usp=drive_web
then reboot holding volume down button once done should have recovery menu select install through adb sideload etc
download fw from here: h**ps://dlcdnets.asus.com/pub/ASUS/ZenFone/ZS550KL/UL-Z00L-WW-21.40.1220.2196-user.zip?_ga=2.175867362.1367738333.1539164489-1033220152.1538417076[/
then on pc copy downloaded fw to adb folder and type: adb sideload UL-Z00L-WW-21.40.1220.2196-user.zip
[/B]
and will begin to install and hope all goes well and good luck
Click to expand...
Click to collapse
pls help which file and how ,i have th same issue as was faced by one of the used
unable to install boot.img
unable to flash boot.img brother
fastboot flash fastboot boot.img
target reported max download size of 268435456 bytes
sending 'fastboot' (24547 KB)...
OKAY [ 0.775s]
writing 'fastboot'...
FAILED (remote: cannot flash this partition in locked state)
finished. total time: 0.803s