Xperia Z keep rebooting - Xperia Z Q&A, Help & Troubleshooting

i'm kinda new to root.
i tried to root my phone earlier and it works, no problem at all.
then i try to flash Cyanogen.
i was unlocking bootloader with cmd.
it came to the step which was 'fastboot reboot', nothing happened.
the LED turned from blue to red, flashed a green one then black out.
i unplugge it then tried to turn on, vibrations and nothing happened.
i tried flashtool, with 'reboot device into system', my phone turn on then keep restarting when it reach the loading screen.
i tried flashing it, both C6602 and C6603(mine is C6603), didn't work.
please help, thank you.

Related

[Q] I think my Xperia V got bricked

So yesterday while on a phone call, My phone just decided to turn itself off and never turn back on.
I can't get into the Recovery, and it's kind of stuck in a bootloop.
When i turn my phone on, it shows Doomkernal's logo, the led lights up purple, vibrates and it just repeats.
Please help!
Just flash stock ROM using flashtool or Sony Update Service.. :good:
jezster said:
So yesterday while on a phone call, My phone just decided to turn itself off and never turn back on.
I can't get into the Recovery, and it's kind of stuck in a bootloop.
When i turn my phone on, it shows Doomkernal's logo, the led lights up purple, vibrates and it just repeats.
Please help!
Click to expand...
Click to collapse
maybe it's a kernel related problem, so, instead of flashing a WHOLE ROM, FIRST tr to flash just a kernel via flashtools or fastboot
it can solve the problem
IF the problem still exists, then try to flash a stock kernel or repair via PC Companion or Update Service

[Q] Untypical Xperia Z brick, urgent help needed

Hi, I know there were many similar topics but this case looks different. I've tried to update my xperia Z using PcCompanion (to newest available kitkat) during flashing i got an error and all I saw after turning it on was grey triangle with warning. PC companion see my phone but cannot repair it (I got error 100), during flashing three different OFW in flashtool it always stucks on kernel or system flashing (excluding them in installation make possible for flashtool to finish the job) It gives constant blue light in fastbot mode but when i'm connecting it in flash mode it only blinks green and then red for a second each and remains black. I can make force shutdown only when it's in charger and being in charger it only blinks with red light and when I want to turn it on it only vibrate once and do and show nothing. It was not rooted, has locked bootloader and battery over 60 % full. Now after a long fight it has unlocked bootloader, custom kernel with recovery acces and installed (i think) custom rom, but when i turn the phone on (what happens only when it's connected to charger) i see grey warning triangle and I'm stuck. Does anyone can help ?

[Q] Xperia Z bootloop

I seeked through some threads like this and some others to revive the phone.. I would like to further verify the possibility to revive the phone while currently downloading flashtools and stock tft..
so here's the situation,
I was planning to deodex the 4.4.2 stock rom before proceeding to here in order to fix the lag issues.
And I followed this tutorial
Unabling to move the framework and the apps files, I moved the framework folder into other location using RE, which is what I expected to be the cause for bootloop situation.
The rooting did not unlock the bootloader, and I dont recognize CWM while rooting my phone.
Now, the phone could not get into flash mode, where the green led notification will be quickly followed by a red led light, and the blue led is fine but since I did not unlock the bootloader I guessed things wont go that smoothly via Fastboot. No, sony companion does not recognize my phone.
And everytime a bootloop cycle is over the phone will vibrate 2 times, what does that mean....
So please help to diagnose my situation or provide some suggestions...
I really hope that anyone can answer me
So according to the recovering guide, you need to wait the phone battery to drain completely and dies, how do I know whether my phone is dead? Now when I attempted to turn on the phone it gave me 3 red led and nothing else, and when I plugged it into wall charger the red led comes few seconds later and the sony logo comes up, the charging logo is there, is this battery dead by xperia z?
And when I attempted to connect the phone to flash mode the led shows red right after green then completely blank.... is this okay... Can someone please help...

Phone stuck at boot, continuously restarts... even after flashing it several times

Hi! Couple days ago, my phone just turned off on its own. I couldn't turn it on, nor could I charge it. Nothing happened when I connect the charger. I didn't touch it for a day or two and then when I tried to turn it on, it tried to boot up, but it just vibrated shortly and only showed initial Samsung logo and then it restarted. That loop of showing only the logo and restarting then happens continuously. I can't turn off the phone using the power button, I have to pull out the battery. When I re-insert the battery, phone automatically turns on, shows the logo and then restarst again and again and again...
I have found some suggestions to try to flash the phone with custom ROM. I tried flashing CyanogenMod using Odin. Odin displays the message that everything went OK, but phone again just boots up to the Samsung logo and then restarts continuously. After that, I have tried several other ROMs using several versions of each. Same thing happens. Odin says that process went OK, but phone again won't boot.
Does anyone have any suggestions what else should I try?
Maybe try to flash all stock files via Odin?
I tried that, too, but same thing happens. Anyway, it looks like it might be some hardware problem. I took the phone to the repair shop and they also tried installing stock and custom roms, but the phone just won't start. They said it's probably some falty hardware that's causing the problem.
Try to turn it on plugged to charger.
Something similar happened to my phone so I followed this guide, then did a recovery of my back up
http://forum.xda-developers.com/showthread.php?t=2748327
janota241, same thing happens when it's on charger, after Samsung logo, it turns off and then it turns on, then it turns off at Samsung logo and so on and so on...
IsReal8a, I tried that guide, but I can't access recovery mode, though I can access download mode. When I try to access recovery mode, phone just get stuck at Samsung logo for about minute or two and then it turns itself off.
I have the exact same issue as you do.
Maybe you can replace the battery, i just suggest
*sorry for my bad english

Xperia Z stuck in bootloop

Hi guys my Xperia Z doesn't start anymore, it's stuck in a bootloop. Before this happend it suddenly turned of, even with full battery. But I was able to boot it, it just turned of when I started an app. But now it's completely ****ed. Is it the battery? When I get a new battery do you reckon it will be ok again? I have a lot of pics on it and no backup -.-
It also doesn't work when it's plugged in, and power + vol up button doesn't make a difference. It only comes to the Sony Xperia boot logo, turns off and tries to start again, I can't even turn it completely off...
Any recommendations?
Ah yeah and it's all original with the newest software on it.
I had that same problem, and tried to reflash my stock rom using flashtool. The flash went fine, but it didn't solve anything, my phone was still rebooting again and again. Tried to reflash again then the flash failed, I don't know why...
Had the same issue but entering flash mode and flashing the rom with flashtool worked

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