Test #1: Read & write CD-RW.
Status: Passed. CD-RW disc was readable on my other drive.
Test #2: Read & write DVD+RW (packet-writing w/ InCD).
Status: Passed. Copied some data over, and the data copied over read fine on my other computer. Considering that when I tried this w/ 812S’s US0A, it wouldn’t even begin to write to DVD media (much less write it in a way that my laptop could read it), this is encouraging…
Test #3: Write a RITEKG04 at 8x, first with simulation and then the real thing.
Status: Partial Pass. Simulation, burn, verification, complete. However, the burn was done at only 4x instead of the hoped-for 8x.
Test #4: Retry test #3 without the simulation to see if 8x works on -R.
Status: Stuck at 1% (lead-in) (disc did not coaster, though… turns out it never even started the lead-in, so the disc was still good afterwards… whew!)
Test #4a: Retry #4, with 4x -R
Test #5: Write a RICOHJPNR01 at 8x, with bitsetting.
Status: Partial Pass… write quality was worse than 451@851 GS0F (similar to 451@851 GS0C), and like the other 812S firmwares, bitsetting FAILED… BookType said that it worked, but the burnd disc was not properly bitset
Conclusions: If you do lot of +R writing, I’d stick with 451@851 GS0F. If you do lots of -R writing UYS1 does seem to have better write quality (at least in this VERY limited test scenario) than the other 451 or 851 FWs