I had an old WH14NS40 (no SVC code printed on label, manufactured April 2013) laying around. I cross flashed this drive to WH16SN48 1.D3 so that I could use it as a BD-R/BD-RE quality scanner. It reads discs just fine after the flash (at least, BD-R and BD-RE, which are all I’ve tried), but I don’t think it can write anymore. I tried to format a couple of BD-RE discs in it, and they failed with fixation errors. I also tried writing a BD-R via ImgBurn, and it seemed to stop when filling up the drive buffer and never advanced to actually burning the data. I’m wondering if maybe the write buffer is larger on the WH16 so it’s just erroring out?
I did bother to do a firmware read using the old non-GUI (real DOS version) of dosflash and a FreeDOS boot disk before I cross flashed, so I can probably (hopefully?) just restore the drive back how it was if I want to use it as a writer. (I actually dumped the firmware twice and verified the files matched, even.) But, I’m curious if anyone has any thoughts on this issue. Is it common to lose writing ability when doing such a cross flash?
Other details: I did the cross flash using the modified official LG flashing tool. The drive was previously running WH14NS40 firmware 1.03 (IIRC), and hadn’t ever been cross flashed before.