I have a 3 year old Samsung Galaxy Grand Duos GT-i9082 which has served me very well. Yesterday I was fooling around with various options in Settings changing some options just for fun and then changing back to original. When I looked at Device Administrator settings, I saw Android Device Administrator and AVG Device Administrator. I enabled them both briefly, hoping to disable them a minute later. The phone rebooted immediately and went into a boot loop. I tried to wipe the partition cache but none of the menu options in Recovery Mode is working, even Reset factory. I am unable to get out of boot loop using the power button, only by removing the battery. Volume-Up+Power+Home button fails to bring up Download Mode. At one point, I accidentally ended up launching Odin Mode where it was stuck for ages until I removed the battery. Since then it only boots ordinarily into a boot loop OR Volume-Down+Power+Home will launch it in Recovery Mode where no menu option works. I have Odin, tar, etc on my pc from where I have reinstalled Android before, I can try to reinstall/restore my OS IF ONLY I can get the phone into Download Mode and detected by my pc. Any help will be welcome.