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[Q] S3 GT-i9300 MT6577 What went wrong?

Ok so yesterday i flashed CWM on my S3 GT-i9300 MTK 6577 clone and tried to install a custom rom but it didn't worked the installation was on 30% but for some unknown reason i was returned to CWM.I restarted the phone to check what happen but to my suprise it boot up with nothing changed same rom no brick,everything was working.So i went to sleep after i woke up today,phone was restarting like crazy it shows up the Samsung logo and then it shows an android logo with blue spining and then it shutsdown itself and this happens again and again and again until i remove the battery.I cannot access my CWM anymore just shows up the Samsung logo again and the android logo after that,can't access my download mode either.Please help me

Luckily I hava a Stock ROM for S3 mt6577! Unfortunately, its 1gb file! It took me 10 hrs to upload but it failed . and so I never done uoloading it again ^_^. If you have Flash tool v 1.244 and a stock rom. flash it. That will solve your problem :

Thecurse21 said:
Ok so yesterday i flashed CWM on my S3 GT-i9300 MTK 6577 clone and tried to install a custom rom but it didn't worked the installation was on 30% but for some unknown reason i was returned to CWM.I restarted the phone to check what happen but to my suprise it boot up with nothing changed same rom no brick,everything was working.So i went to sleep after i woke up today,phone was restarting like crazy it shows up the Samsung logo and then it shows an android logo with blue spining and then it shutsdown itself and this happens again and again and again until i remove the battery.I cannot access my CWM anymore just shows up the Samsung logo again and the android logo after that,can't access my download mode either.Please help me
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Click to collapse
hey can you tell me how did you install the cwm on you samsung s3 mt6577 .. this is my email address [email protected]
please your answer will help a lot.. thank you

Ummm try to restore your s3 using kies
Then as i know, use odin to install rom on samsung devices(?) because i use it to flash rom on my gtab 7.7 which is GT-P6800

Thecurse21 said:
Ok so yesterday i flashed CWM on my S3 GT-i9300 MTK 6577 clone and tried to install a custom rom but it didn't worked the installation was on 30% but for some unknown reason i was returned to CWM.I restarted the phone to check what happen but to my suprise it boot up with nothing changed same rom no brick,everything was working.So i went to sleep after i woke up today,phone was restarting like crazy it shows up the Samsung logo and then it shows an android logo with blue spining and then it shutsdown itself and this happens again and again and again until i remove the battery.I cannot access my CWM anymore just shows up the Samsung logo again and the android logo after that,can't access my download mode either.Please help me
Click to expand...
Click to collapse
what do you mean by you can not access the download mode?

Ummm try to restore your s3 using kies
Then as i know, use odin to install rom on samsung devices(?) because i use it to flash rom on my gtab 7.7 which is GT-P6800

[Completed] Can't get galaxy s II into recovery mode nor download mode?

I used to work with a custom ROM with my Samsung galaxy s II,it worked fine but suddenly stopped and its not powering on,its charging and gives the samsung logo but doesn't boot up. I had CWM installed already so I got to recovery mode and tried rebooting phone from here but it took so long so I took off the battery but it doesn't boot up and in addition,it doesn't show the Samsung logo nor charges and its not detected by Odin,not even detected by the computer.Is my phone briced and how do I fix it.thanks in advance.

Hi,
We need to know your devices model number. There are different S2 sections and we need to know your model to point you towards help.
Thanks!

Galaxy S6: Stuck on Logo After Applying Update

s6 stuck in the logo screen
Hi I bought this phone on internet while I was trying to setup ask me for an update I did it but after it was stuck on logo screen then waited for 10 minutes but still the same then I tried with Odin software download a stock firmware but same result stuck in logo screen then stupid me try with different software but same result I sent the phone to Samsung repair centre they told that the device was rooted and they don t touch it I asked if they can repair and they told me that it s not worthy it will cost me a lot money I tried with smartswitch but same result then I tried with bootloader and modem but no luck Odin always say pass I can t access to recovery mode only download mode working the only progress I did is I can install twrp can you help me please or the phone is in hard brick?
Thank s in advance :crying::crying:

I NEED HELP!! Soft Brick my samsung j7pro sm-j730g/ds

As the title says i brick my phone samsung j7pro (sm-j730g/ds).. i tried rooting my phone
but i followed the wrong guide(stupid me) its for nougat and not for oreo8.1(my phone) and
when i restarted it (like on the video guide) im stuck in logo screen with “only official binaries can be flashed”.
And the worst is that when it restarted after i rooted it, it locked the USB DEBUGGING & OEM again.
-I tried flashing stock ROM using odin3 but it always fails..
-i tried samsung smart switch but it says "unsupported device"
Hope someone can help me.. or give me links to similar case coz i cant seem to find one..

smart switch
MrEckz said:
As the title says i soft brick my phone samsung j7pro sm-j730g/ds.. i tried rooting my phone and then when it restarted im stuck in logo screen with “only official binaries can be flashed”. And the worst is that when it restarted after i rooted it, it locked the USB DEBUGGING & OEM again.
I tried flashing stock ROM using odin3 but it always fails..
So now im stucked at logo screen.. i cant access my phone to unlock oem and usb debugging coz it wont reboot.. i can only go to download mode but i dont know what to do next..
Hope someone can help me.. or give me links to similar case coz i cant seem to find one..
Click to expand...
Click to collapse
you can try emergency recovery on smart switch on your PC !

peter couniaz said:
you can try emergency recovery on smart switch on your PC !
Click to expand...
Click to collapse
I already tried that but it says “unsupported device”
Any other way to fix my phone?

Can't repair software of Samsung galaxy s6 edge

Hello there, I am already more than 3 days trying to download stock firmware for my phone, every day another problem, on the beginning it was always fail while trying with Odin, then I was try another firmware it was downloaded but stucked on update 32%.i understand it can be wrong firmware, I tried other methods, I was add pit for Samsung galaxy s6 edge G925F. Downloaded but didn't help, I tried another firmware for other region it was downloaded, even no fail, but stucked on erasing. I tried recovery mode (volume up-home-power) cant access it. Today I try again, all the time stuck on Initialization.
Note I tried different Odin version.
USB on laptop there's two, 2.0 and 3.0(blue)
The time it was succeed without fail it was on the black USB 2.0
So now even completely can't start to download firmware.
Also I was try to download Twrp after it was nearly succeeded and stucked on erasing, hoping that I can access recovery mode to wipe everything, but Twrp stucked on logo.
After all that I can't do nothing.
I still can access downloading mode and phone stuck on logo if I put it on the charge.
I hope I was give right and enough informations to help me solve the issue.
I appreciate any help

Willy1993 said:
Hello there, I am already more than 3 days trying to download stock firmware for my phone, every day another problem, on the beginning it was always fail while trying with Odin, then I was try another firmware it was downloaded but stucked on update 32%.i understand it can be wrong firmware, I tried other methods, I was add pit for Samsung galaxy s6 edge G925F. Downloaded but didn't help, I tried another firmware for other region it was downloaded, even no fail, but stucked on erasing. I tried recovery mode (volume up-home-power) cant access it. Today I try again, all the time stuck on Initialization.
Note I tried different Odin version.
USB on laptop there's two, 2.0 and 3.0(blue)
The time it was succeed without fail it was on the black USB 2.0
So now even completely can't start to download firmware.
Also I was try to download Twrp after it was nearly succeeded and stucked on erasing, hoping that I can access recovery mode to wipe everything, but Twrp stucked on logo.
After all that I can't do nothing.
I still can access downloading mode and phone stuck on logo if I put it on the charge.
I hope I was give right and enough informations to help me solve the issue.
I appreciate any help
Click to expand...
Click to collapse
You should identify the exact device model.
Then check to download the stock Samsung firmware for this model.
You can read about it here:
[Stock Firmware] Official Stock Firmware for ALL Galaxy S6 Edge Variants [Latest]
Reserved
forum.xda-developers.com