[Samsung Epic 4G Touch] Jumpy89:
So I'll preface this by saying I'm pretty new to this whole thing and don't exactly know what I'm doing (big surprise to most of you, I'm sure). Around a month ago I attempted to flash CM9 on my Epic 4G Touch, and after a few hours and a lot of reading through this forum I was able to get it to work without any major issues. I liked it but continued to experience issues with various wireless capabilities (wifi, mobile data, GPS) that I'm pretty sure are just a problem with the phone, but today I decided to try to give CM10 a go anyways to see if it might solve the problem.

Here's where I made two very stupid mistakes - first, I assumed that since I figured it out before I would be able to do it again this time from memory. Second, and probably worse, I did not really keep track of what exactly I did, so I can't explain with certainty the steps leading to the problem.

So, here's what I think I did:

Pretty sure I started off by going into download mode and and using the Odin one-click executable to flash the rooted stock EL29 ROM (SPH-D710.EL29_CL852097_ROOTED-OneClick.exe). I was able to boot after this, and everything seemed to work fine for stock Gingerbread. I then installed ROM Manager, and flashed ClockworkMod recovery.

Then here's where I think I first ran into problems: I tried to reboot the phone into recovery mode. From the last time I flashed a custom ROM, I remember having an issue where I would get CWM on the first reboot, but after that it would go back to normal (or is this the intended design?). I cant quite remember, but I think I booted into recovery mode and somehow only had the default recovery. At this point, for some reason I decided that as long as I was here I should go ahead and factory reset and clear the cache (why I did that, I don't know). I know with some Samsung devices there is a bug where the factory reset can brick you phone, but I thought this was only when doing it from an ICS rom and I'm pretty positive that I did this from Gingerbread.

Instead of just reflashing the stock ROM and starting over I decided to just flash CWM again from Odin. I booted into download mode and opened up Odin 1.85. I selected a file called "StockCWM-EL26.tar" for PDA. I'm not quite sure where I got that, it was left over in my phone folder from when I flashed CM9. I do think it works, however in what I'm absolutely sure was a big mistake I was also under the impression that I needed to repartition and loaded "1_02_20110310_emmc_EXT4.pit" in the PIT field. I'm not sure where I got that one either, but from a search I did on the name I got the impression that you should never use it.

At this point I was able to boot into CWM, but when I tried to navigate to "install zip from sdcard"->"choose zip from internal sdcard" it gave an error, saying something about not being able to mount emmc. When trying to boot up normally, I also got an error message about a firmware update having failed and needing to use Kies. Not able to proceed, I tried to use the Odin one-click executable to go back to EL29. It failed, giving the following output:

<ID:0/003> Added!!

<OSM> Enter CS for MD5..

<OSM> Check MD5.. Do not unplug the cable..

<OSM> Please wait..

<OSM> Checking MD5 finished Sucessfully..

<OSM> Leave CS..

<ID:0/003> Odin v.3 engine (ID:3)..

<ID:0/003> File analysis..

<ID:0/003> SetupConnection..

<ID:0/003> Initialzation..

<ID:0/003> Get PIT for mapping..

<ID:0/003> Firmware update start..

<ID:0/003> recovery.bin

<ID:0/003>

<ID:0/003>

<OSM> All threads completed. (succeed 0 / failed 1)

This happened on additional attempts as well. Thinking I was suffering from the EMMC brick problem, I followed Jaymoon's post in this thread and used Odin to flash the EL30 ROM with the "Q1_20110914_16GB-patched.pit" PIT file. Afterwards the phone would show the standard spring "4G" boot animation, and would enter a boot loop thereafter.

That's about it. I've spent the last several hours looking through the forums, but I haven't been able to find any additional information that I'm sure would help. I figure this is about the time to ask you guys instead of probably mucking it up further on my own.

EDIT: I should say that I am able to get into download mode without a problem, as well as recovery mode (I can flash CWM with Odin and that works as well, although some directories can't be mounted).