If anyone has access to a Giant B and would be willing to upload the firmware, please let me know. I've been working on an overclock for a while, and from what I can tell the frequency multiplier is either hard-coded into the firmware of the STM32 chip, or hard-coded into the ASICs. I'm ordering parts now to try a hardware mod to see if an overclock is even possible.
https://github.com/baikalminer/GB/tree/master/orangepiI think Ironeinstein was referring to the STM (chip on blue controller board) firmware, not the OrangePi firmware. The STM firmware does not come in baikalminer's github image. Someone with actual access (can be remote SSH) to a Giant-B would need to be willing to run a few commands on their miner to pull the firmware off of it. This file would be helpful in determining if a software overclock on the x10 is possible.