I have friends s3 that wont boot up, I had an s3 myself flashed it a million times fixed various issues and it always worked in the long run. im a little stuck with this one though
she says she has never flased or upgraded the phone with a computer , only ever done OTA, so the myth of efs disappearing after flashing is baffling me. she has said she was using the phone the battery died and every since it wont boot past the Samsung logo. I put the phone into recovery mode, it cand up but in red writing read " failed to mount efs (invalid argument) I did a standard clear cache using recovery rebooted still stuck, I then did a factory reset, this didn't help either , I then proceded to flash the lastest uk 02 stock rom with odin, after it completed phone booted , still sticks at the logo.
so if anyone knows of a way (except using a hammer) to get the phone going please let me know.
I have tried using kies to do emergencey firmware recovery but have to code to do this with. I tried the update and initialisation , put in model number and serial number, kies acts as if its ok to proceed it downloads "firmware upgrade components" it gets to 100% the box disappears and kies remains there greyed out and does nothing.
I have a windows 8 computer, ( crap when it comes to compatability ! ) I have tried the same senarios on both windows 7 and xp.
also I have looked around first but theres lot of mixed up information, also has anyone heard of the ics method ? where you flash stock ics and it apparently fixes the efs issue, I havnt tried this yet, as there is a massive warning saying t can cause SDS if the emc isn't the right emmc chip or something like that !