Well my friend, recovery card which I used is a simple SD 8Gb, not HC.
This card I used many many times for upgrading with several firmwares without any problem.
Anyway, I will try with a small one 250Mb and I will follow your instructions.
Thanks a lot.
When you're doing recovery, bootloader takes care of reading sector 0-n where recovery bootloader is stored. That is not same as reading files from partition on your sdcard, that's why I'm suggesting you to use another card.