Hey guys, I've been working on this for hours...
I too have a 1200BEVS (08VAT1) and I used 1.0 and I got the E69 error on my 360. I restored using the undo file with no problems. I reflashed it with 1.0, and again, same problem, so again I restored it. Then I found this post.
Thus, I went and found v0.91b (which was very difficult... if anyone is reading this, the only place I could find it was by using the auto xbins downloader).
It does work, except with one hitch. When it is detecting the SATA drive (not in legacy mode) hddhackr gets "stuck", I have to power off/power on the HDD, and then it moves along like normal. It flashes, and upon restart, the drive shows up as the flashed drive in the bios. Running hddhackr -f again (after powercycling the drive during drive detection) says that the drive is ready for the xbox. HOWEVER, when I put this v.91b flashed drive in the xbox, it gives me an e69 error again.
I tried in legacy mode but it also has trouble detecting the drive until the drive is powercycled. However, upon powercycling, it shows all of the information for the drive, asks to flash (y/n) but aborts before you have the option to choose.
I have two non-flashed 20gb's that work just fine, no error.
I wasn't planning on transferring any saves, I just wanted a blank 120GB drive. Do I need to use xplorer or create the partitions manually somehow?
Any ideas? Thanks!