I relized that there are aonother same topic like this but I did almost every instruction on there topic but I still cannot resolve it yet.
I did not update any firmware because of my herelink is old one that doesn’t has activation key.
I use BEC for supporting air unit with 9v separate from the other unit.
I did reset my GCS as well but still cannot resolve it.
I did flash air unit too.
I bougth it from a small reseller that doesn’t exist anymore and i cannot contact them too. But i still have the box that have serial number. can the main company of hex sent the activation key for me?
Now, I found the old version of air unit firmware (AU01200226) on the internet that still downloadable. I could flash successful by manual flash via cmd (fastboot>>flash_all.bat) and could not use flasher.exe yet as shown in the pic. Then the LED2 back to lit but still cannot pair with controller. So, please give me the latest air unit firmware set as the old version (Pic 2).