811s-->812s?

這裡有個修改韌體的方式讓811s可以決定各種DVD片子燒錄的速度
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Changing the bytes of the Firmware, can be a little tricky, but if you've ever hex-edited before, you can do this. If you haven't, you should be able to learn it.

The hex byte values for the burn speed are the most important. 1 Byte = 8 bits = 0000 0000 -> 1111 1111

Read from Right to Left, if you had 0000 0001 = 01 Hex, that would be 1X burn speed. 0000 0010 = 02 Hex = 2X burn (or 2.4X burn if +R) speed. 0000 0011 = 03 Hex = 1X Burn & 2X/2.4X burn allowed.
Hopefully you're seeing a pattern here.
0000 0001 = 01 Hex = 1X Burn
0000 0010 = 02 Hex = 2X/2.4X Burn
0000 0011 = 03 Hex = 1X + 2X/2.4X Burn
0000 1111 = 0F Hex = 1X + 2X/2.4X + 4X + 6X Burn
0001 1110 = 1E Hex = 2X/2.4X + 4X + 6X + 8X Burn (no 1x)
Usually 1X is left out as we're going for speed, are we not?

These are your burn bytes, they will tell the burner what the media code can be burnt at, doesn't matter what is given on the DVD itself unless there is no media code (a pure generic POS DVD blank)

Let's choose 2 common ones:
RICOHJPNR01 and CMC MAG F01
In the Firmware, there are hex 00's seperating the values.
So RICOHJPNR01 would show up as 00 52 00 49 00 43 00 4F 00 48 00 etc... in plain view, it looks like R I C O H etc.
00 4C 00 4D 00 4C 00 20 00 4D 00 41 00 47 would be
C M C M A G etc...
The pattern is Media Code, a few 00 bytes and then a burn byte. If, for example, you had the CMC MAG F01, as shown above in a prior post, the burn speeds are 2.4X and 4X, which would be 0000 0110 = 06 Hex. After finding the byte pattern for CMC MAG F01, there should be a few 00 bytes, and then a 06. Change that to hex 1E and it will allow 2.4X, 4X, 6X, and 8X burning to that media. Now, someone asked above about entering media codes. Yes it can be done, but you'll have to REPLACE an existing media code, which means if you try to burn a media code you replaced, the drive will have no info of it and treat it as whatever it can read off the DVD's burn allowed rates. So if you know you won't by Riteks for example, you could replace a ritek media code, with a code from your DVD (use DVD Identifier or DVD Info Pro.) You have to replace it exactly byte by byte, using same # of bytes.
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有興趣的人修改看看是否可以燒錄8X DVD-R,如果可以,那代表812s跟811s只是
韌體不一樣而已,SONY 530都可以升級,我不認為811s不行.