SOLVED: ZenFone 3 Laser (ZC551KL) dm-verity no boot

Search This thread

Niemer

Senior Member
Sep 2, 2009
69
8
I set my phone down last night and came back to it with this screen and it will not boot into Android. It's not rooted or unlocked, the only thing I can think of is that an OTA killed it somehow, although I wasn't alerted to one or initiate anything.

X31G1ci.jpg


When I touch any of the buttons this screen comes up. Rebooting just starts the process over again.

w9cLR86.jpg


I can see the phone with fastboot, and I tried flashing the factory boot.img again with no luck. I'm unable to find the factory recovery.img or system.img anywhere to give that a shot.
 
Last edited:

Niemer

Senior Member
Sep 2, 2009
69
8
I can't get into the recovery to flash, unless I'm doing something wrong, I can only get to the bootloader and I cant find the proper .img files to flash with fastboot.
 

Niemer

Senior Member
Sep 2, 2009
69
8
when I select reboot to recovery in fastboot it just reboots to the dm-verity screen again. It's like the recovery is just gone.
 
Last edited:

Niemer

Senior Member
Sep 2, 2009
69
8
Just got off the phone with Asus, they were no help at all. I asked for the recovery image and they don't have one, what?

Does anyone know of a way to extract data from the internal storage in fastboot? I'd like to get a copy of that before I send it in...
 

Niemer

Senior Member
Sep 2, 2009
69
8
SOLVED!
I created a modified UPDATE.ZIP using this method and flashed in fastboot like so:

Code:
fastboot flash system update.zip

That allowed the phone to boot to recovery, from there I flashed the firmware that is available to download from the Asus website in recovery and the phone booted up with no loss of data
 
Last edited:
  • Like
Reactions: WA2LACE

Punkrocknerd

Senior Member
Nov 6, 2011
78
7
So I did this with the newest firmware.
I can boot to recovery now (couldn't before just like yourself) but on the flash from fastboot I got
>target reported max download size of 536870912 bytes
Invalid sparse file format at header magi
error: write_sparse_skip_chunk: don't care size 2008017072 is not a multiple of
the block size 4096
erasing 'system'...
OKAY [ 0.010s]
sending sparse 'system' (0 KB)...
error: write_sparse_skip_chunk: don't care size 2008017072 is not a multiple of
the block size 4096
error: write_sparse_skip_chunk: don't care size 2008017072 is not a multiple of
the block size 4096
OKAY [ 0.030s]
writing 'system'...
FAILED (remote: buffer overreads occured due to invalid sparse header)
finished. total time: 0.060s

Meaning something failed.
I'm stuck on the ASUS boot screen
Tried a Factory Reset from recovery, still nothing.

I tried fastboot erase system -w
then reflashing the newest firmware, and still nothing

Since I can get to the recovery now, does anyone have a stock .img i can flash? or any other ideas?
 
Last edited:

WA2LACE

New member
Jan 17, 2017
1
0
unknown partition 'wallox.zip

SOLVED



Hi, Your response has been very useful, but I still Have a Problem With regard. The Times tells me That does not FIND the zip file needed, other times: Unknown Partition 'wallox.zip

What's the Problem?

ps. Excuse my language
 

matematto

Senior Member
Jan 4, 2011
121
10
SOLVED!
I created a modified UPDATE.ZIP using http://forum.xda-developers.com/showpost.php?p=69380242&postcount=3 method and flashed in fastboot like so:

Code:
fastboot flash system update.zip

That allowed the phone to boot to recovery, from there I flashed the firmware that is available to download from the Asus website in recovery and the phone booted up with no loss of data

the link is broken... can you please give the update.zip file. Thanks

[EDIT: update.zip found ! phone recovered... all ok, thanks :) ]
 
Last edited:

FastGas

Senior Member
Dec 24, 2013
71
27
Salento

SnakeByte

Senior Member
Feb 8, 2015
228
58
Alberta
One click solution to unbrick and fix "no recovery mode" on zenfone 3 laser (zc551kl)

Just accidentally i found a "one click" solution to unbrick / fix loop boot / fix no recovery mode... My story started after i unlocked my Zenfone 3 Laser ZC551KL (Z01BDC) bootloader with the official tool from Asus. After i couldn't find any custom rom for this phone, i wanted to re-lock my bootloader to receive FOTA updates, so, i flashed boot.img and recovery.img from a Zenfone 2 Laser as i couldn't find files for mine, and i soft bricked it... boot loop, would only boot in bootloader, can't even access the "recovery" to apply the firmware update from sd card. After couple days of searching EVERY SINGLE WEB SITE for a viable, easy solution to fix my phone, and hundreds of files, firmwares, tools downloaded, i found it, right under my nose... Earlier in the process of looking for a solution, i downloaded a stock firmware zip (Asus_ZenFone_3_Laser_ZC551KL_WW-ZC551KL_13.40.104.1_20161014, who also included SP_Flash_Tool_v5.1720_Win. It's roughly 1.84 Gb, and 4.07 Gb after unzipping. So just download the zip, unzipp it and go into the folder and look for subfolder "Firmware+ Tool", where you'll find lots of files... look for "flashall_AFT", it's a "Windows Command script" file... double click it with your phone connected in fastboot mode, and wait. Will take 5-10 minutes, just be patient. I lost all my hopes while i was trying this just for sick of it, i left it "work" and went for a smoke... When i came back, my phone was on, with the Android Welcome setting screen.... I think i cried of happiness in my brain. Hope will help others fix the issue. Just to note, this method did not relocked my bootloader, is still unlocked, but what the hell, my phone is alive again. Aaaa, and even if i had Android 7.1.1 before, after this fix, i have Android 6.1 which i will keep till August 2018 when we'll get the Oreo for Zenfone 3 Laser. If you want to, after this fix, you can go to Asus page and download the latest version you'll like and install it manually. Here is the only link where you need to go and download the zip file to fix (it will redirect you to Mediafire for download): http://stockandroidrom.com/asus-zenfone-3-laser-zc551kl-usb-driver/
Wish you all the best.
 

arhimondus

Member
Jan 15, 2014
31
0
Need Latest Firmware+Tool for my Asus zc551kl please. Update.zip and Rother method not working. Progress bar on bootscreen 2 sec delay and power off. I'm no update later 6.0.1 with unlocking bootlooader. Please,help me
 

Top Liked Posts