opkg install block-mount kmod-usb-storage e2fsprogs | Issue | Workaround | |-------|-------------| | Modem not detected after reboot | Add usb reset to /etc/rc.local | | Low LTE speed | Install kmod-rt2800-pci ? No – wrong. Actually: disable software flow offloading. | | Serial console stops after boot | Append console=ttyS0,115200 to kernel cmdline in /boot/args | | Can't revert to stock | Requires NAND dump restore via U-Boot + nand write | Reverting to Stock Firmware Boot into U-Boot and write back your backup:

opkg update opkg install modemmanager luci-proto-modemmanager Create a new interface → protocol "ModemManager" → APN from your carrier. Some MF286 revisions need a MAC fix:

nand read 0x1000000 0x0 0x8000000 # read full NAND (adjust size) tftp 0x1000000 full_backup.bin Also save mtd partitions:

uci set wireless.radio0.macaddr=$(cat /sys/class/net/eth0/address) uci set wireless.radio1.macaddr=$(cat /sys/class/net/eth0/address | awk -F: 'print $1":"$2":"$3":"$4":"$5":"$6+1') uci commit wireless wifi reload Format as ext4 and mount: