Hey, i have 4 ekino-bt-j19001-r20 industerial mainboards and all of them are faulty. the producer site has bios and supports for r10 version. im trying to upload bios using ch341 but its not working. can anyone send me the bios file for this mainboard? on the board there are labels showing BIOS V1.9 and BIOS V4.3 i read all 4 mainboards bioses and 2 of them are V1.9 and other 2 are V4.3. i tried uploading all of them on another with no luck. also uploading the r10 bios on each of them not working.