I have a Quectel EC25-AF currently running:
EC25AFFAR07A08M4G_01.001.01.001
I would like to request the latest official firmware compatible with AT&T, T-Mobile, Verizon, and Visible.
My main issue is with Red Pocket GSMA / AT&T: LTE data and incoming SMS work correctly, but outgoing SMS fails or returns +CMS ERROR: unknown error.
Please provide:
- Latest compatible EC25-AF firmware
- Windows QFlash tool and USB drivers
Thank you.