[Q] Symptoms of incorrect boot image - Galaxy S III Q&A, Help & Troubleshooting

Hello everybody,
I have been digging around for a solution but nothing, the symptoms of flashing an incorrect boot image as stated on GALAXY s3 TOOLKIT (restarting in loop mode / stuck on boot logo sometimes and surely Bluetooth is not functioning). I flashed JB 4.1.2 but nothing, cland and wipd dalvik an cache from boot mods and then tried JB 4.1.1 again an finally ICS 4.0.4 ... all gave th same result...
do i need to repartition the handset and do a new flash via Odin ?
is there any solution ?
Please help me further
Best Regardds

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[Q] China GT-I9300

Hi xda , i have this china-bought Galaxy S3 GT-I9300.
It started out with gps not working and i tried to flash a stock rom using odin (device was rooted) and it failed after countless flashings.
And then whenever I tried to boot the device again it was stuck at the ''Samsung GALAXY SIII GT-I9300'' screen. not sure if it was a bootloop but it was just hanged there. I have cwm recovery mode but i can't access download mode however i tried. And all of my computers cant seem to detect the device. so basically the thing i am able to access now is the cwm recovery mode. i tried various roms but to no avail.(they all hanged while installing system files)
Some specs about this device i know:
- Board : uniscope77_bu3_cu_ics2
- CPU : armeabi-v7a
some additional info : i once formatted everything on the device using cwm (internal storage , system , everything)
-I tried reset to factory settings countless times too but they were all stuck at the ''Samsung GALAXY SIII GT-I9300'' screen.
-Its original stock firmware was from china and yes , ive tried using china stock rom and all i get was blahblahblah and a ''(bad)'' thing.
if you need anything else like what other things i did to the device pls tell me. pls help me solve this problem thanks you ^_^
site
zBurnXz said:
Hi xda , i have this china-bought Galaxy S3 GT-I9300.
It started out with gps not working and i tried to flash a stock rom using odin (device was rooted) and it failed after countless flashings.
And then whenever I tried to boot the device again it was stuck at the ''Samsung GALAXY SIII GT-I9300'' screen. not sure if it was a bootloop but it was just hanged there. I have cwm recovery mode but i can't access download mode however i tried. And all of my computers cant seem to detect the device. so basically the thing i am able to access now is the cwm recovery mode. i tried various roms but to no avail.(they all hanged while installing system files)
Some specs about this device i know:
- Board : uniscope77_bu3_cu_ics2
- CPU : armeabi-v7a
some additional info : i once formatted everything on the device using cwm (internal storage , system , everything)
-I tried reset to factory settings countless times too but they were all stuck at the ''Samsung GALAXY SIII GT-I9300'' screen.
-Its original stock firmware was from china and yes , ive tried using china stock rom and all i get was blahblahblah and a ''(bad)'' thing.
if you need anything else like what other things i did to the device pls tell me. pls help me solve this problem thanks you ^_^
Click to expand...
Click to collapse
Where did you bought it?
China
your screwed the only thing you can do is download Chn_Chn Firmware from Samsungs website and flash it though odin. And that's the only fimrware that will work, unless you flash a custom bootloader through your sd card as then it will overwrite the encrypted boot.img allowing you flash any European Firmware.

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So from yesterday my phone is stucked on a bootloop ... i didn't installed anything in the last days, i didn't installed anyupdate.
I tried to install stock firmware via odin but i'm still on bootloop ...
Before installing stock firmware my phone was booting until android .. it showed Android is optimizing app x from xx and then rebooting and doing the same thing ..
After intalling stock my phone is restarting after Galaxy s6 edge - powered by android logo.
I've looked into this forum and tried to solve how others solved,but nothings work ...
Anyone knows how to solve this?
I tried to flash custom rom but i cannot copy on internal storage via twrp ... and i dunno also how to solve this ...
VladHD said:
So from yesterday my phone is stucked on a bootloop ... i didn't installed anything in the last days, i didn't installed anyupdate.
I tried to install stock firmware via odin but i'm still on bootloop ...
Before installing stock firmware my phone was booting until android .. it showed Android is optimizing app x from xx and then rebooting and doing the same thing ..
After intalling stock my phone is restarting after Galaxy s6 edge - powered by android logo.
I've looked into this forum and tried to solve how others solved,but nothings work ...
Anyone knows how to solve this?
I tried to flash custom rom but i cannot copy on internal storage via twrp ... and i dunno also how to solve this ...
Click to expand...
Click to collapse
Factory reset from recovery.
Sent from my SM-N920C
i did that ... same
Problem solved with JTAG repair.
Can you describe in details?
Sent from my SM-N920C
When a phone is in a hard-bricked state it’s most likely that the bootloaders, which is the phones initial code to launch the phones ROM, becomes corrupted.
The only way to revive the phone is to rewrite the bootloader code.
So basically, if you can't flash a rom through twrp or odin, this service we'll rewrite the os from scratch without having any acces to phone.

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