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

[Niemer]

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.

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

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.

 

[edowar]

that was happened to my zenfone 3 5.5 too,
solution just flash firmware from asus with stock recovery

 

[Niemer]

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]

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.

 

[Niemer]

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]

SOLVED!
I created a modified UPDATE.ZIP using this method and flashed in fastboot like so:

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

 

[Punkrocknerd]

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?

 

[Niemer]

Try flashing the firmware .zip from either the SD card or sideload in recovery.

 

[Punkrocknerd]

Try flashing the firmware .zip from either the SD card or sideload in recovery.

I will try that tonight. Thanks!

 

[WA2LACE]

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]

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:

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 ]

 

[FastGas]

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:

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

link not works

 

[zanchi.and]

help

hello to all guys, can someone give me the modified file fastboot flash system update.zip .. I'd be very grateful ..
Hello

 

[akashnigam]

that was happened to my zenfone 3 5.5 too,
solution just flash firmware from asus with stock recovery

how did you able to flash sir? Mine is coming on same dm-verity screen again and again.

 

[Anonymalious]

how did you able to flash sir? Mine is coming on same dm-verity screen again and again.

Create the modified update as instructed here https://forum.xda-developers.com/showpost.php?p=69380242&postcount=3

I can boot into the setup dialogue now but the phone keeps shutting down on its own after a few seconds. Anyone experiencing the same thing?

 

[richsch]

Hi. I just made a post with a fairly comprehensive solution to the brick-problem that I had. If your problem is anything like mine was, then it should be useful.

https://forum.xda-developers.com/zenfone-3/help/unbricking-zenfone-3-ze552kl-dm-verity-t3563970

Much thanks to Niemer for being the inspiration for the solution. And thanks to everyone in the forum for asking good questions and posting good responses.

 

[_d4ni3l]

Niemer can you be so kind and upload your update.zip anywhere?

 

[xxMoon]

Lets open this tiny beast up!!!!

 

[SnakeByte]

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]

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