✨AI-Generated response✨
It sounds like you're encountering compatibility issues between Betaflight Configurator 10.10 and older firmware versions like 3.5. Configurator 10.10 is primarily designed for Betaflight 4.5 and newer firmware.
For older firmware versions, you may need to use an older version of the Configurator that corresponds to that firmware. You can typically find older Configurator releases on the Betaflight Configurator GitHub releases page.
The Troubleshooting guide might also offer some general connection tips, although this specific issue points strongly towards version mismatch. The Firmware Flasher page also notes that older Configurator versions may be needed for older firmware.
If you continue having issues after trying an older Configurator version, please ask in the #1052457584772255784 channel for more detailed help.
-# {'cause': 'button press'}