Hi, I bought 2 pcs T-Echo which came with 2.10.0 firmware. Communication in one direction was fine but one device showed low RSSI for the the other and I would not receive acknowledge. Updated to 2.2.21.0 no change. Loaded the Lilygo factory test firmware on it to measure output power and it looked ok. Loaded the 2.2.22.0 Alpha firmware on it and now it works.
Question: Anyone aware of a persistent variable or setting written to the SX1262 which could cause such a problem? I am thinking of overcurrent limit. The settings in the IOS app have been identical for both devices.