All SanDisk USB Flash Drives

[wae]

Sandisk curzer blade 64 too slow and......
I'm father has bought Sandisk cruzer blade 64 but it dosen't work properly.

My sandisk is SDCZ50C-032G-B35B.

In device manage it shows :[generic usb mass storage]..not as before .
Also, I can't transfer a 4GB or larger file to my USB flash drive.

Your firmware (SanDisk SecureAccess) dosen't recodize my flash drive.

How to repair my flash drive ?
How to downlaod the right frameware ?

[Ed_P]

Not sure how many drives you are trying to fix, your father's or your own.

Sounds like someone bought a used blade or formatted a new one.  New drives larger than 32 GB are formatted as exFAT which supports files larger than 4 GB, which is a FAT32 format limitation. 

SecureAccess only runs on SanDisk drives and only supports the drive it is on.

Firmware for Windows devices is gotten from Microsoft.  For other OSs I have no idea.