I apologize if this isn't the best place for this post, I put it where I thought was closest to where it fit. I understand T-Mo is GSM, and this is a CDMA phone.
I have a day old Samsung Galaxy S Showcase (SCH-S950C(GP)) and I cannot flash any rom I have found to it whatsoever either with multiple versions of Odin or the Heimdall Suite. Heimdall will let me upload a recovery.bin and zImage, but the phone ends up end an endless reboot loop. I'm getting an error message about re-partitioning, and when I was able to get into recovery mode it would throw a checksum error upon trying to flash through an SD card package. I have tried uploading in Odin with both the SD card in and removed, and i have toggled whether or not to repartition and it always fails. Perhaps there is a stock rom out there that will work, and I have just been unable to find it? An ICS rom would be nice, but I would like a working phone again.
The phone doesn't seem to be bricked because I can get to download mode, but perhaps there could even be a problem with the internal flash memory? I'm just throwing the possibility out there as I'm getting nowhere even on multiple PCs. Any help would be greatly appreciated!