I am trying to retrofit our gl-mifi stock with RTC boards which I ordered from gl-inet.
I was sent instructions when I ordered, basically to solder on as in photo attached.
This looks like the way the way to RTC boards are soldered on to our newer stock that come from the factory pre-installed. The only difference is the model we ordered already has headers on the two rows of 5 pins.
I can’t get the mifi to detect the device at all even though I have installed all the same packages etc as I install on the ones we get from with RTC pre-installed.
Running I2C detect doesn’t find anything.
I’ve tried on a few different mifis and RTC boards just to be sure it’s not a faulty board.
I’m soldering all 9 pins to the board, I’m wondering if that is what I’m doing wrong. Which pins do I actually need to connect from the board to the mifi?
I’m pretty sure the model of RTC is SD3077.
Sorry, I’m not an expert on this so help appreciated.