You CAN harm a Liteon, very easily, if you don't back up the EEPROM correctly - the EEPROM is the calibration for THAT drive, and if you have to resort to someone else's copy, you will lose quality.
I'd say, "keep your powder dry", and GET HOLD OF the hacked firmware if you think you might risk it (as it MAY get suppressed), but let wiser/braver/more foolish guys beat their drives up with it first.
Only if you're actually stupid enough to even touch the EEPROM. In case you're not aware, the 812S@832S doesn't require anything to be done to the EEPROM. And unless someone goes *out of their way* to find tools to let them mess with the EEPROM (most of the available tools can't even touch that part of the drive, and most certainly nothing on my site has the ability to touch that part of the drive), there isn't even the risk of the EEPROM being accidentally damaged or changed.
The EEPROM does indeed change very often, in between burns, but is has been determined that the changes that take place between burns is merely diagnostic debugging data from the previous 4 burns being stored in the EEPROM, and it has no effect whatsoever on burn quality.
Simple truth is, there is absolutely no EEPROM-related risk whatsoever, as there is no chance of damaging that part of the drive (unless, of course, the person goes out of their way and seeks out the resources necessary to mess with that... as I said, no part of the firmware-flashing messes with that). Know what you're talking about before making your statements...