Recently upgraded ar750 firmware through webportal now i cant get it to start?? Only one light shows up, nothing else. Tried reseting everything. Can i save it?

Do you mean you upgrade online or upload manually via webportal? And which firmware do you flash? If it is brick, you can refer to Overview - GL.iNet Docs.

I upgraded online - it said the new firmware was available and it got stuck. Now it won’t even boot.

Can you confirm the reset procedure for ar750

The reset procedure is the same as posted. Overview - GL.iNet Docs