Flashing Aruba AP11 with OpenWRT

Hi all, I have been trying to flash OpenWRT on an Aruba AP11 following the instructions here - https://openwrt.org/toh/aruba/ap-303

However there were two issues -

  1. After step 4 - "$ run ramboot_openwrt" I got the error - "openwrt ipq: fdt fixup unable to find compatible node" and to press enter to activate console.
  2. After press enter I am able to process as normal. However after I run the flash command. None of the usual output were produced. It resets and go right back to the Aruba stock os.

Anyone has seen this issue before?

Thank you