Hi! I can do the upgrade of this firmware: DVR-107D v1.21 - RPC-1 + 12xRip + nx4all.zip because the dvd-r verbatim were writing to 4x. After this upgrade, the first dvd verbatim are writing to 8x, but the next dvd don't writing and reading!!! What's this problem? Can you help me??
ps: excuse me for my english