To save you some hassle:
I tried overclocking LDW-411S (FS0B) to LDW-811S (HS06).
Led kept flashing yellow.
Drive was recognized by BIOS and Windows XP,
however drive did not recognize any inserted disc.
So I flashed back to FS07 (FlashFixed LiteOn updater)
Drive dead :Z :a :Z
Drive was not recognized by BIOS and Windows XP anymore.
I had to do the dead drive recovery procedure:
Connected the 411S as secondary slave (and jumpered as slave),
disconnected my LTR-48125W because it was not recognized as secondary master when the faulty 411S was connected (even though I jumpered it as master).
Flashed to FS02 with mtkflash 1.80, rebooted and the 411S was back
Rejumpered and switched drives to original configuration, rebooted. Ran fs0b.exe to upgrade to FS0B again and final reboot.
Happily everything seems to work again
(Have not tried to burn a disc again yet, but reading CD-ROM and DVD+RW works fine)
Don’t try this at home