GPy refuses to LTE attach after running for months
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@curtis-hendrix Gee that's a bit scary, I'm running 41065 on my GPY modems too. Modem updating seems to be a bit of a stumbling block for pycom. When I asked them why I can't get a copy of the 43818 modem firmware in my latest GPY purchase for my other GPYs they said it was because they're still testing the upgrade packages.
One thing I've learned about the monarch modems is they have a lot of sensitivity to the 3v3 rail. I've lost 2 modems from when I was powering the GPY via USB. It took a while for me to realise that the frequent resets we were experiencing were from dips in the 3v3 rail when the sqns tried to transmit. Since we've been running our GPYs from a LiPo we haven't had any more power related resets & haven't had any more modem failures.
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@kjm I spoke too soon. I've got 2 x GPYs now that won't attach & all I've done is to try the lte.send_at_cmd('AT+CEREG=2;+CEREG?;+CEREG=0') cmd on them. Seems an improbable result I know but 2 out of 2 is enough for me, I'm not about to try it on a 3rd GPY just to get the hat trick & prove my point!
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