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OpenWRT flash br200-wp notes


1. Hook into UART (9600 baud) and enter U-Boot. You may need to enter a
password of administrator or AhNf?d@ta06 if prompted.
2. Once in U-Boot, tftp boot the initramfs image:
   dhcp; setenv serverip;
   tftpboot 0x2004000 openwrt-mpc85xx-p1010-aerohive_br200-wp-initramfs-kernel.bin;
   bootm 0x2004000;
3. Once booted, scp over the sysupgrade file and sysupgrade the device
to flash LEDE to the NOR.

Info for kernel and sysupgrade are provided here https://openwrt.org/toh/hwdata/aerohive/aerohive_br200-wp

When you run sysupgrade I used:

sysupgrade -n -v /tmp/firmware_image.bin

per the information here https://openwrt.org/docs/guide-user/installation/sysupgrade.cli

Please know the first boot takes a long time.