Anybody knows if the meraki MR20 can be flashed with OpenWRT
There is currently no support for MR20 available, AFAICS.
You are welcome to try adding support, it has a compatible chipset
however I am not sure which chipset exactly...can you provide FCC ID?
the first step is to open the case and remove shields (carefully like a tin lid)
record all the chip models, identify the UART pins for serial console
however the MRxx series is tricky apparently...requires a custom bootloader (?)
probably this depends on the model?
I believe I found it
FCC ID is this?
you can start studying this commit which is very similar to this board
It seems that uboot on these boards to not allow access to the console for TFTP command
you might have to send it in to someone....