Hi tautech,
"It should be by USB stick of which there are mandatory requirements, it must be in FAT32 format and best with 4k clusters and stick size should be 8GB or smaller."
Yes, i know that and i am using 1GB stick.
The problem is in that i stucked on FW update version 2.01.01.35RB2. After that i cannot update it to newer versions.
Thank you in advance!