Flashing(resetting) the miner with the latest OrangePi software didn't work either.
Are you sure you flashed the SD card with the correct PI software? Baikal has used a few different models of PIs in their various ASICs.
Here is the correct SD card image for the Giant B:
https://drive.google.com/open?id=147WvUpIH2s9L2iI6R9Kgq8CLOLDS_kNP