[T-Mobile, Samsung Galaxy SIII] marty136:
OOhhh so much problems this 4.3 update!

Hey guys, i have been reading the forum for a while but i just registered to rant/share about the troubles i had with my galaxy s3. I apologize for the long post in advance. I had the exact same problem as you ''Igor977'' i couldn't make a call it disconnected before dialing I even tried it 15 times to see if it would go once but nothing, switching to airplane mode didn't do nothing in my case, I always had to restart and that would would work for 2 sometimes 3 calls after that had to restart again. Stuck with a phone that can't call! Before i was running all stock 4.1.2 and everything went fine until i got the 4.3 update message one morning, battery fully charged i accepted without too much thinking and when i got back to it the phone was stuck in samsung boot loop then i tried everything i know(i am not an expert but i know some stuff). Odin would not let me reinstall anything failing at every attempt. I then connected via KIES and reinitialize worked and everything seemed fine i was happy until i tried to make a call. Tried to reinstall with odin at least 15 times with different roms even tried ICS 4.0.4, cyanomodgen 10, other custom roms, all failing due to the new bootloader included in 4.3. Then i went to my carrier service center where the guys there don't know much apart from factory reset(which did not work i told them tried it 10 times because it goes to the last samsung install ie:4.3) and he told me to check with samsung since it was their update that created that. The cherry on top is that i am out of warranty since 3 months. I did call samsung and i heard the same song again: warranty is over so don't bother us go to a service center and pay for repair. As stubborn as i am i did go to a service center and explained my situation to the android specialist that really seem to know his stuff, he told me no problem i will get you back to 4.1.2 and all will be fine. I was happy the end was near. Next day phone rang, it was him telling me he did reinstall my phone and to try it but he was unable to downgrade it because of some sort of efuse that seem to be blown(knox counter 0x1) and that he did all he could but he would still pursue the matter and call me back if he finds a solution, that was 10 days ago still no solution and the phone still won't call more than twice before a restart.WOW THAT IS SO COOL SAMSUNG. After lots of talk with my carrier customer service i was able to get new phone for around 100$ and i took the offer since i didn't know what much else to do exept pay full price on another phone. I got my new sgs3 running 4.1.2 and guess what it works perfect. Since then i hard bricked the old one trying to replace the bootloader with noradio_v3.zip that i found here on the forum from a guy saying he was able to downgrade after changing the bootloader, anyway it did install correctly it seemed but when the phone rebooted it never came on=no power no boot no sound no nothing and pc won't see it anymore. A month passed now since it all started and sure i got new phone and i'm happy but i am a guy that never gives up and probably jtag the old one just to continu toying with it until someone find a solution. I don't think my wife(sgs2) and i (sg3) will ever buy stuff from a company that don't respect its clientele like that. No iphone for us either.

Good day to all and happy new year.