Lost data on storage card after upgrading

[leo984]

Hi people I have a big issue...
...After I flashed a new ROM on my Polaris, if I browse to my storage card for unbackup my data the storage card results with no file but the it's no empty but no files are shown... Even on my computer the Memory Card is half full but there's no file inside... Using recovery data software the problem cannot be solved...
Please help me
Thank you guys

[Rudegar]

put the card in a sdcard reader and use any undelete tool for windows (this is where you find one using google) it works on sdcards just like it does on harddisks

[leo984]

I did It with several software and with microSD-SD adapter or microSd-USB adapter but only few useless file are displayed... it says that there's 2gb of free space but no files are displayed...

[-PiLoT-]

im pretty sure that leaving the sd card in while flashng isnt recommended

unless ur flashing from card and i didnt think that that was possiible