Wonder if i can do tweaks-overclocking stuff for this I tried changing firmware to a region free one it works but i loose ability to burn 4x media in 8x...
^^Overspeeding.. which 4X media are you trying to burn at 8X? Good stuff like TYG01 and YUdenT001 will work, as will Verbatim 4X media. Moser Baer 4X will be marginal at 8X.. YMMV.
hmmm.... i'm talking about that feature in 1620 "pro" which let to burn any 4x media in 8x speed. now after the region free firmware i dont have that option in nero anymore
^^You CAN'T overspeed RW discs! How on EARTH did you overspeed it earlier? It won't work ever again.. don't ever try it! You'll b0rk your disc AND your burner. Stick to overspeeding only write-once discs!