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Dzięki MACNOW za podzielenie się swoimi doświadczeniami. Oto dodatkowe informacje o konwersji 401@811S zaczerpnięte z forum CDFreaks (ciekawe, kiedy skasują im te posty...):
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After comparing many eeproms I come to the conclusion:
1. every eeprom has 1024 Bytes
2. most of the eeprom data is the same on every drive
3. about 130 Bytes are drive (individual) specific
4. at least 3 Bytes dynamicly change from burn to burn or firmware version to version (on the same drive)
5. AND there seem to be 5 magic bytes that are MODEL specific
I don't know the values of these 5 Bytes on a 811s - if we find out - maybe there is a chance to overclock a 411 to 811.
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Very interesting:
Take a hex-editor
Open the original 811s HS06 Firmware from Liteon
Look at address F0066 (BIN) or 93B8A (Flash EXE)... and you will find a string you wouldn't expect there: "LDW-411"
So what does it mean? The 811 is a 411? At least the 811 uses some or more exactly 97% of the 411s FS0B firmware.
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I can think of three reasons why the string is there:
1. It's just a leftover string which was not renamed in the new firmware, wihout any functionality.
2. It's required for proper operation of the firmware and/or eeprom.
3. Or, more interesting: it could also be there to serve a simple string compare to check if the 811 firmware is installed on a 411 (allthough this would be rather simplistic)
If case 3 is true then this might be the 'magic byte'.
Would be interesting to change the 411 string into something else and then put the modified firmware back in a 411 and test the results...
(In this case it might be important to keep the CRC checksum identical)
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