I've had my T-Mobile Samsung Galaxy S2 since about December of 2011. Today I had it randomly restart on me while I was at work. That's happened to me before but today I have a unique situation. The phone is stuck in a continuous cycle of restarting. It shows the Samsung logo, then the T-Mobile 4G splash screen and then back to the start again. That's all it does. I thought I'd try loading the stock ROM through Samsung Kies. The thing is... I can get the phone into download mode but it doesn't stay there unfortunately. It simply keeps restarting. The device was rooted but was running the latest stock T-Mobile ROM at the time. I did a wipe via recovery mode when I managed to get in there but... I'm not sure what else to try. I'd appreciate any insight anyone might have.
Did the wipe in recovery help? If you're rooted, try flashing DARKSIDE.CACHE.WIPE in recovery. You could try this, but I'm not sure if it will work with the phone in a boot loop. Have you talked to Samsung about this? And welcome to the forums.
I've tried both. I'm very lucky to get the phone detected by Odin but unfortunately the phone reboots before it can start flashing the firmware. The phone has been rooted and that's something I did at my own risk so I'm reluctant to bring it in to T-Mobile.
Are you able to get into recovery and stay there? You may be able to flash a stock rom and stop the boot loop if its a software issue. I wouldn't worry too much about T-Mobile and rooting your phone. I have seen plenty of people get them exchanged.
I am so sorry to be the bringer of bad news, but it sounds very much like your phones boot loader has crashed. This will be a hardware fix and the phone will need to go back to samsung. The only software fixes that are available, all require download mode or recovery mode. If you cant enter either of these, its the boot loader hardware that has malfunctioned.
Anyhow.. I just got off the phone with T-Mobile and started the warranty process. I don't remember thanking you for your help but thank you.. it is greatly appreciated.
