If you guys are having that much trouble transferring ISOs with CMA/OpenCMA, why not use Adhoc File Transfer?
You will need a PSP or another Vita, but its fast, no dropouts, send multiple files/folders at a time and you can name ISOs whatever you want.
You only need to do the 8.3 naming thing for transfer with CMA.
And no need to keep overwriting your savedata.
If you are interested, for PSP
Adhoc File Transfer v0.7
For TN-V4
Official TN-V Homebrew thread
Just install like any other homebrew.
PS VITA
1.80 Urbanix TN-B something awesomer
I absolutely LOVE IT when pirates are too stupid to get their stolen games to work!
Makes me laugh, every time