It's very possible there's a problem with the 1.V5 firmware, but at what stage and who did something wrong is hard to say. This isn't our firmware. I don't know how it was copied from the Vinpower drive, or how it was prepared/edited.
Our 1.V.1 firmware supports 6/8x writes for CMCMAGBA5 media.
Regarding OPC:
If the external calculator in Imgburn is enabled or disabled, it has no effect on the drive. Disabling OPC for the drive would require extensive modifications to the drive's firmware. The LG NVC:50/51/55/58 models, like all LG models, have zoned OPC, which is always active, as seen on every write run. OPC checks the error rate multiple times every few zones via the ERC block and corrects the laser power and beam. VinPower models definitely have different OPC settings than factory LG models, and the same applies to the VinPower Pioneer BDR-209DBK Plus / BDR-212V.
Disc quality tests work on any 1.Vx firmware because they are developed by VinPower. Firmware versions 1.V1~1.V5 are also unlocked and read UHD files from the factory. Version 1.V5MK most likely allows you to flash unlocked firmware over the locked 1.V6 / 1.V7 / 1.V8 / 1.V9 firmwares in these models.
Disc quality test for
Verbatim BD-R 25GB MID: CMC MAG BA5
LG WH16NS58 fw.1.V1
Imgburn x6 (USB Unitek 3324)
