Stuck in flash mode, FTF flashes, goes back to flash mode, bootloop at Sony logo

SeanInToronto

Member
Dec 18, 2012
46
12
0
Hey guys,

I've been trying to work with my friends ZL for the past day or so. Normally I don't have these sorts of problems.. I've successfully been able to root and install custom recovery and rom within a day on devices like the Xperia U, Nexus 4, and Xperia X10. For some reason I'm having trouble with the ZL, locked BL.

- If I plug in the phone to the PC and load up flashtool, it says connected in flashmode. I can force it to connect in fastboot by holding vol+ but if I do nothing, it automatically connects in flash mode. This isn't normal, is it? Automatically connecting in flash mode?

- If I try to flash a stock FTF, it will flash it with NO issues at all. The only problem is when it is done flashing, it says the regular message of disconnect and start your phone, but at the same time it says phone connected in flashmode. So FTF flashes and completes and the flashtool log still says it's connected in flash mode, then if I try to disconnect the phone and boot it, it used to start looping, but now it just gives me 3 quick flashes of a red LED

- If I try to power on the phone, I just get 3 quick red LED flashes

- If I try to connect the phone to the charger, it shows the sony logo for a quick second, shuts down, then shows the sony logo again, and repreats indefinitely

- If I try to connect it to the PC, it boot loops in the same way. If I leave flashtool open, it says device connected in flash mode, then disconnected, then flash mode, then disconnected, and so on.

Based on my very limited knowledge of these things, I'd say the phone is stuck in flash mode.

Now, how do I get the phone out of flash mode? Or if that's not the problem, how do I fix this? I don't think it's possible to permanently brick an Android phone these days, so there must be something I can do get this phone back.

Please let me know if you have any suggestions! I would greatly, greatly appreciate it :)
 
Last edited:

ATRIXXIRTA

Senior Member
Mar 17, 2012
2,435
766
0
The Shangri-La Motel
Does the led light up green when it's connect to the pic and flashtool is saying it's in flashmode?

Sounds dumb, but have you COMPLETELY powered the phone off by holding down the yellow reset button for 10 seconds, until you get 3 vibes, and trying again?

Sent from my C6503 using Tapatalk
 

lunatechhtc

Member
Mar 14, 2011
9
1
0
San Miguel, Bulacan
Does the led light up green when it's connect to the pic and flashtool is saying it's in flashmode?

Sounds dumb, but have you COMPLETELY powered the phone off by holding down the yellow reset button for 10 seconds, until you get 3 vibes, and trying again?

Sent from my C6503 using Tapatalk
yup, aldready did that mnay time over. i even physically remove the battery connector on the board itself. the lights turn on for about half a second then gone. its always flash mode when i connect it to flashtool even after flashing..
 

lunatechhtc

Member
Mar 14, 2011
9
1
0
San Miguel, Bulacan
this what came out when i flashed boot.img...
INFO - Selected kernel (boot.img or kernel.sin): C:\Flashtool\firmwares\boot.img
INFO - Flashing selected kernel
INFO - sending 'boot' (12350 KB)...
INFO - OKAY [ 0.391s]
INFO - writing 'boot'...
INFO - FAILED (remote: Command not allowed)
INFO - finished. total time: 0.392s
INFO - FASTBOOT Output:
sending 'boot' (12350 KB)...
OKAY [ 0.391s]
writing 'boot'...
FAILED (remote: Command not allowed)
finished. total time: 0.392s

INFO - Please check the log before rebooting into system
 

ATRIXXIRTA

Senior Member
Mar 17, 2012
2,435
766
0
The Shangri-La Motel
Is your bootloader unlocked?

Sent from my C6503 using Tapatalk

---------- Post added at 10:52 PM ---------- Previous post was at 10:50 PM ----------

By the way, OP, my name is Shaun and I live close to Toronto, lol

Sent from my C6503 using Tapatalk
 

odlanorbeatsbr

New member
Mar 2, 2014
1
0
0
Good evening friends, I am having problems after installing the rom on the DE 101 upon rom singapore 101, the first time I did the installation of the ROM was running everything is normal but when doing a simple test in Antutu, when the test reached to 22% the phone shut down, at first I thought it was bug in the app, but when trying to connect the phone came the problem, the phone will not turn over does not pass the boot screen "Sony". I can only call him when I keep the charger plugged in, I've been several ROMs and anything, the problem persists and the cell phone only turns on when plugged into the charger. I do not have the backup partition as the TA already bought the phone with unlocked bootloader.
If anyone can help me thanks.
 

lunatechhtc

Member
Mar 14, 2011
9
1
0
San Miguel, Bulacan
ive charged my zl even its boot loops then after 3 hours, i charges and when i turn it on it show that its fine but when i unplug the phone, it's doing the same boot loop. i think i might have to replace the battery. i will call sony service center here but since its not on warranty anymore, i may have to shell out some money. btw, does anyone knows where can i buy ang orig battery replacement online? thanks!
 

raitokun

Member
Jan 31, 2014
28
1
0
yes! its definitely fixed it. now, i'm happy that i bumped into this thread and thank you for guiding me :good:
same for me, i've installed busy box
i just don't know it's not working with dual recovery
so i just got bootloop till SONY logo not even boot animation so i can't restore my backup

trying many times to flash the stock ROM with flahstool with no result
but somwehow i managed after many time, finally flahstool flash the stock ROM :D
 

limafranco

Senior Member
Jun 6, 2012
301
26
0
yes! its definitely fixed it. now, i'm happy that i bumped into this thread and thank you for guiding me :good:
I'm having the same problem you were.

Always on 'flashmode' using flashtools. Phone won't turn up, always bootlooping.
Neither SUS could resolve it,

Think I'll have to use warranty service...

Bad luck