Hi everyone,
I’m struggling to install OpenWRT 24.10 on my UniFi U6+ and could use some help. Here’s what I’ve tried so far:
- Initial attempts with stock UniFi firmware:
- Tried stock firmware v6.6.78 → AP failed to boot properly.
- Rolled back to v6.6.55 (as suggested in some guides) → same issue.
- OpenWRT installation:
- Downloaded the correct sysupgrade.bin for U6+
ssh ubnt@192.168.1.20 [10:19:14]
ubnt@192.168.1.20's password:
BusyBox v1.25.1 () built-in shell (ash)
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Welcome to UniFi U6+!
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U6-Plus-BZ.6.6.55# echo 5edfacbf > /proc/ubnthal/.uf
U6-Plus-BZ.6.6.55# grep PARTNAME /sys/block/mmcblk0/mmcblk0p6/uevent
PARTNAME=kernel0
U6-Plus-BZ.6.6.55# grep PARTNAME /sys/block/mmcblk0/mmcblk0p7/uevent
PARTNAME=kernel1
U6-Plus-BZ.6.6.55# grep PARTNAME /sys/block/mmcblk0/mmcblk0p8/uevent
PARTNAME=bs
U6-Plus-BZ.6.6.55# fw_setenv boot_openwrt "fdt addr \$(fdtcontroladdr); fdt rm /
signature; bootubnt"
U6-Plus-BZ.6.6.55# fw_setenv bootcmd_real "run boot_openwrt"
U6-Plus-BZ.6.6.55# fw_printenv
baudrate=115200
bootargs=ubootver= ramoops.mem_address=0x42fe0000 ramoops.mem_size=1048576 ramoops.ecc=1 ramoops.record_size=262144 console=ttyS0,115200n1 mem=262112K ubntbootid=0
bootcmd=bootubnt
bootdelay=2
ethaddr=1c:6a:1b:3a:95:2d
fdtaddr=46b8d8ac
fdtcontroladdr=4ffc0590
ipaddr=192.168.1.20
loadaddr=0x46000000
netmask=255.255.255.0
serverip=192.168.1.2
stderr=serial@11002000
stdin=serial@11002000
stdout=serial@11002000
ubntaddr=440000b0
is_default=true
boot_openwrt=fdt addr $(fdtcontroladdr); fdt rm /signature; bootubnt
bootcmd_real=run boot_openwrt
U6-Plus-BZ.6.6.55# tar xf /tmp/openwrt.bin sysupgrade-ubnt_unifi-6-plus/kernel -
O | dd of=/dev/mmcblk0p6
8102+1 records in
8102+1 records out
U6-Plus-BZ.6.6.55# tar xf /tmp/openwrt.bin sysupgrade-ubnt_unifi-6-plus/root -O | dd of=/dev/mmcblk0p7
11022+0 records in
11022+0 records out
U6-Plus-BZ.6.6.55# echo -ne "\x00\x00\x00\x00\x2b\xe8\x4d\xa3" > /dev/mmcblk0p8
U6-Plus-BZ.6.6.55# reboot
- Problem: After reboot, it falls back to TFTP mode instead of booting OpenWRT.
- Additional attempts:
- Repeated the entire process 3 times → same result.
- Verified file hashes (no corruption).
Any guidance would be greatly appreciated!
