Hi guys... I need help because I made a stupid mistake that is costing me sleep. I picked up a new SGSII just yesterday. I hated the stock ROM almost immediately, so I decided to root it so I could install MIUI, just like I had on my previous phone (Captivate). Ordinarily this wouldn't have been a problem, but I did two very stupid things. First, I tried using ODIN and Kies on a PC running a pre-beta version of Windows 8, which I discovered (too late) is incompatible. Sure enough, ODIN froze halfway through flashing to a new bootloader. I waited several minutes until I was sure there was no hope of it completing, and then I did the next stupid thing: pulled the plug and tried to reboot the phone. Sure enough, the phone instantly boots to screen that says "Firmware upgrade encountered an issue. Please select recovery mode in Kies & try again." There's no option to continue or circumvent this error screen, and therefore no way to get back into download mode. I actually went to the hassle of removing Windows 8 from my computer and reverting back to Windows 7, just to make Kies work properly. But Kies still won't talk to the phone at all; it just detects it and then reports a connection error. The Kies emergency recovery mode will not detect the phone, and won't even try recovering firmware until it gets a silly recovery code, which I've never seen before. I've tried every reset method possible - three-finger reset, battery-out USB boot, removing SD and SIM cards, etc, etc. I've also tried killing off all Kies processes and re-flashing the bootloader from ODIN, but I get this result: <ID:0/003> Initialzation.. <ID:0/003> Get PIT for mapping.. <ID:0/003> Firmware update start.. <ID:0/003> zImage <ID:0/003> NAND Write Start!! <ID:0/003> <ID:0/003> Complete(Write) operation failed. <OSM> All threads completed. (succeed 0 / failed 1) So, ODIN seems able to connect, but unable to fix anything. And I'm too noob to know what I'm doing from here. Can anyone offer a suggestion?