Hi, today I tried to downgrade my Galaxy S3 from Cyanogen 12 to stock firmware (So from Lollipop to Jellybean) but now it's stuck on the bootsceen and I can't access the recovery mode, I can just access download mode.
Hi Hencick - Welcome to XDA.
I'll just naturally assume that you're familiar with flashing roms...
Were you running a custom kernel with CM?
Can you access adb functions with a pc?
I have a similar problem on my phone I discovered today. I just get the Samsung logo on screen, it goes off, then comes back (bootloader loop i guess).
It was just sitting on charge. It hasn't done anything for a while other than updates, now when I come to it, it's like this.
I can't get into recovery mode, adb mode, download mode or anything. Just the Samsung logo flashing up, then going and coming back up.
Is this recoverable?
As it it keeps powering up, then off, then back up I'm not even sure I can use Odin on it.
TIA.
Edit: Ok, I can get it into download mode it seems. Only, now I'm not sure what to do! lol
Related
Hello
I have been using my int Gs3 for sometime and decided to root and explore the mods and custom fw world. I have started with getting to root access and after that install CWM.
Then I try to install nightly cyanogenmod 10. It didnt work and boot back to normal GS3 Touchwiz interface. After that I tried the GooManager and when the phone is restarted it went to bootloop. I removed the battery and put it back. The problem started there.
The phone does not boot to any OS, I only can see the galaxy s3 9300 black splash screen and awatis there. I can go into download mode, but when I go into recovery mode, I can see the Android robot, and it dies The screen is too fast but what I can see it cannot mount EFS, System and any folder.
So I have tried several different methods
- Tried to flash with original rom, different roms, CWM and what I can find suitable for international model. But everytime I got stucked in Nand Write part. In some of them, the flash started and stucked in installing some parts(passes the cache and hidden and stuck after that)
- Tried with bricked phone roms, different PIT files and Bootloader Vralec methods.
- When I am trying these, I have tried with 3 different PC's with/without KIES and Samsung drivers installed. When I plug the phone in Download mode, the PC recognizes it as Generic device.
- I manage to flash the CWM but when it restarts it does not go any further than the first splash screen, but in Odin, some time later it turns to pass. Funny, when the phone is on Galasy S3 black splash screen, the pc recognizes the phone and starts to install the driver.
So, here is an interesting flashing story of mine. I really would appreciate your valuable comments and suggestions.
Thanks in advance.
cugami said:
Hello
I have been using my int Gs3 for sometime and decided to root and explore the mods and custom fw world. I have started with getting to root access and after that install CWM.
Then I try to install nightly cyanogenmod 10. It didnt work and boot back to normal GS3 Touchwiz interface. After that I tried the GooManager and when the phone is restarted it went to bootloop. I removed the battery and put it back. The problem started there.
The phone does not boot to any OS, I only can see the galaxy s3 9300 black splash screen and awatis there. I can go into download mode, but when I go into recovery mode, I can see the Android robot, and it dies The screen is too fast but what I can see it cannot mount EFS, System and any folder.
So I have tried several different methods
- Tried to flash with original rom, different roms, CWM and what I can find suitable for international model. But everytime I got stucked in Nand Write part. In some of them, the flash started and stucked in installing some parts(passes the cache and hidden and stuck after that)
- Tried with bricked phone roms, different PIT files and Bootloader Vralec methods.
- When I am trying these, I have tried with 3 different PC's with/without KIES and Samsung drivers installed. When I plug the phone in Download mode, the PC recognizes it as Generic device.
- I manage to flash the CWM but when it restarts it does not go any further than the first splash screen, but in Odin, some time later it turns to pass. Funny, when the phone is on Galasy S3 black splash screen, the pc recognizes the phone and starts to install the driver.
So, here is an interesting flashing story of mine. I really would appreciate your valuable comments and suggestions.
Thanks in advance.
Click to expand...
Click to collapse
GO here : http://forum.xda-developers.com/showthread.php?t=1993044
Not sure what has happened here, I am running stock 4.1.2.
The phone locked up so I pulled the battery and restart phone then freezes at the Samsung logo, I tried putting it into recovery mode, it loads as far as the little android man then reboots and again freezes at the Samsung logo,
Anyone any ideas?
What about download mode?
If you can get into, try to flash again stock firmware...
Take a look to this thread also
Hey everyone! Big problem..
I have installed CM12, Android 5.1 it's been all fine up until now, I was planning on selling the phone, so I factory reset it, that went well until it tried to turn itself back on afterwards.
My Samsung Galaxy S3 i9300t is stuck in a bootloop. I can not do absolutely anything.
I've tried taking the battery out, holding the three buttons, putting it back in, doing that with a USB, As soon as I turn it on, holding buttons or not it goes straight into a bootloop. I can't use odin to install the custom firmware again as I can't get into recovery or download mode or anything, once it's in the boot loop it stays there..
Any help is appreciated.
Bump?
So first off, here is what i know about my device.
Samsung Galaxy S4
SCH-I545VRUGOC1
I installed TWRP because i guess i had no idea what i was doing, and locked myself out of my recovery mode, then tried to fix that by flashing the stock rom which didn't work either.
when booting this is what happens.
Recover - Nothing
Odin/Download mode - Works.
Power only - boots to black screen that says "Samsung Custom OS" then the screen turns black, blue LED comes on and it doesn't restart or turn off, it just seems to be frozen. (I expect this is because i've attempted to flash multiple times thinking the issue was my cable connection)
no idea what to do now, can't boot can't think straight since i've been at it for hours finding things on these forums but nothing seems to work through odin.
Can't download VZW Repair assistant (no online link, and phone wont recognize through my pc)
samsung kies wont recognize it either.
Help?
Need any info, ill be at my computer for a few hours trying to hash this out.
-Don't care about my data on the phone, it's replaceable.
Thanks.
Fixed it Via SmartSwitch
Was able to recover all of the aforementioned.
Hello, yesterday while i was cycling to work my phone suddenly turned off. i tried to turn it on but it didnt so i got the battery out for a few seconds and i tried again. my phone was in bootloop after that, at work i tried to flash few different stock firmwares on it but none of them worked since i cant access Recovery mode. when i do the buttom combination to access recovery mode (WMshua) it just shows a huge amount of white lines of text and goes back into bootloop after. i also tried to flash other recoveries using ODIN but none of them seemed to change anything. im quite out of possibilities and im not sure what to do.
Thanks in advance, Caikorn.