Calvin Ronksley

Dear Community, I want to build a custom FirmWare for Banana Pi M2 Berry, im currently using the BPI-M2-Ultra Firmware, cuz no BPI-M2-Berry FirmWare exist. What do I need for building for my SBC(BPI-M2-Berry) ? I want to use my SBC as a LTE-Router/ Mesh-Repeater and want to pre-install some necessary packages, the device need. I want to build a Dashboard for Administrate the Device. Maybe I'll use electron + reactjs, or would it be better to use php for it? Greetz BlackLeakz