I recently purchased Alexmos clone BGC controller for 2 axes(https://robu.in/product/bgc-3-12-mos-large-current-2-axis-brushless-gimbal-controller-driver/). Wired the 2805 140kv motor(https://robu.in/product/2805-140kv-gimbal-brushless-motor/) with the gimbal controller and tried to connect it. It is showing the GUI vs Board version mismatch, Please check the screenshot of the error. It is showing that my Firmware version is 0.53b4, I even tried upgrading the firmware to 2.2b2 using this link(http://www.brokking.net/article_revive_bgc.html) as well as official hex code(https://www.basecamelectronics.com/downloads/8bit/). I tried this using Arduino UNO as ISP. But in both cases, I got the same error message, and the GUI cant connect to the board. When I try to run it with GUI v2.2b2, nothing happens and GUI generates an error report attached.

I Bought this board and the following manual came attached with it. Tried checking the manual uploaded on the official website for v2.2(file:///C:/Users/Kunal/Downloads/SimpleBGC_manual_2_2_eng.pdf) where it says to attach using FTDI. I tried that as well but still, it doesn't work. This time it just shows connecting to board and then shows the timeout error. Please suggest How to rectify this issue.

https://www.rcgroups.com/forums/showthread.php?1878613-Goodluckbuy-cheap-gimbals/page32 Checked this as well but couldn't find a solution to the issue.