I’m experiencing a problem with a SARA AFF equipped with u-blox SARA-R410M modem - firmware 02B-01 : few seconds after startup, the modem freezes and does’not respond to any command - even a simple AT.
I devoloped my software on a card equipped with SARA-R10M , firmware 02B-00, and it worked perfectly.
I did’nt find any workaround except a blog stating that this problem could be solved with a modem firmware upgrade.
Is it corract ? and, please, could you give me assistance on the issue ? Where do I get the firmware and which procedures to apply?