https://forum.openwrt.org/t/belkin-rt3200-linksys-e8450-wifi-ax-discussion/94302/6276

How to upgrade the Linksys E8450/Belkin RT3200 Router from 22.03.x/23.05.x to 24.10.x

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skyblaster - Jan 6, 2025; 12:53 AM



Excellent. I just took my spare unit from 22.03.4 to 24.10.0-rc4


Where I started:

# grep "(release)" /dev/mtd0ro
v2.4(release):OpenWrt v2021-05-08-d2c75b21-3 (mt7622-snand-1ddr)
v2.4(release):OpenWrt v2021-05-08-d2c75b21-3 (mt7622-snand-1ddr)
v2.4(release):OpenWrt v2021-05-08-d2c75b21-3 (mt7622-snand-1ddr)
v2.4(release):OpenWrt v2021-05-08-d2c75b21-3 (mt7622-snand-1ddr)



Upgrade Process


 1. Mount the UBI boot_backup volume:

# mkdir /tmp/boot_backup
# mount -t ubifs ubi0:boot_backup /tmp/boot_backup
# exit


 2. Copy the boot_backup files from a Linux desktop (using IPv6 because I disabled DHCP previously):

$ scp -O -6 root@\[fd6e:837b:30fa:10::1]:/tmp/boot_backup/* .
root@fd6e:837b:30fa:10::1's password:
mtd0                            100%  512KB  15.2MB/s   00:00
mtd1                            100% 1280KB  14.9MB/s   00:00
mtd2                            100% 1024KB  20.1MB/s   00:00
mtd3                            100% 2048KB  20.3MB/s   00:00


 3. Copy 1.1.3 to the E8450:

$ scp -O -6 openwrt-mediatek-mt7622-linksys_e8450-ubi-initramfs-recovery-installer.itb root@\[fd6e:837b:30fa:10::1]:/tmp/
root@fd6e:837b:30fa:10::1's password:
openwrt-mediatek-mt7622-linksys_e8450-ubi-initramfs-recovery-installer.itb              100%   14MB  14.6MB/s   00:00


 4. Sysupgrade 1.1.3:

$ ssh root@fd6e:837b:30fa:10::1

# md5sum /tmp/openwrt-mediatek-mt7622-linksys_e8450-ubi-initramfs-recovery-installer.itb
281706e72d27c60b7152f5a037d947a1  openwrt-mediatek-mt7622-linksys_e8450-ubi-initramfs-recovery-installer.itb

# sysupgrade -v -n -F /tmp/openwrt-mediatek-mt7622-linksys_e8450-ubi-initramfs-recovery-installer.itb


 5. Copy 24.10.0-rc4 to the E8450:

$ scp -O openwrt-24.10.0-rc4-mediatek-mt7622-linksys_e8450-ubi-squashfs-sysupgrade.itb root@192.168.1.1:/tmp/
openwrt-24.10.0-rc4-mediatek-mt7622-linksys_e8450-ubi-squashfs-sysupgrade.itb   100%   10MB  29.3MB/s   00:00


 6. Sysupgrade from 1.1.3 to 24.10.0-rc4:

$ ssh root@192.168.1.1


BusyBox v1.36.1 (2024-08-12 22:48:06 UTC) built-in shell (ash)

  _______                     ________        __
 |       |.-----.-----.-----.|  |  |  |.----.|  |_
 |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
 |_______||   __|_____|__|__||________||__|  |____|
          |__| W I R E L E S S   F R E E D O M
 -----------------------------------------------------
 OpenWrt SNAPSHOT, r27137-f51cb74473
 -----------------------------------------------------
=== WARNING! =====================================
There is no root password defined on this device!
Use the "passwd" command to set up a new password
in order to prevent unauthorized SSH logins.
--------------------------------------------------
root@OpenWrt:~# cd /tmp/

root@OpenWrt:/tmp# sha256sum openwrt-24.10.0-rc4-mediatek-mt7622-linksys_e8450-ubi-squashfs-sysupgrade.itb
ffb0c7c21b67553f41999d1d8079e2eca965dd792704314292672ab1e85d3818  openwrt-24.10.0-rc4-mediatek-mt7622-linksys_e8450-ubi-squashfs-sysupgrade.itb

root@OpenWrt:/tmp# sysupgrade -v -n openwrt-24.10.0-rc4-mediatek-mt7622-linksys_e8450-ubi-squashfs-sysupgrade.itb

Thu Jan  1 00:06:28 UTC 1970 upgrade: Commencing upgrade. Closing all shell sessions.
Command failed: Connection failed
root@OpenWrt:/tmp# Connection to 192.168.1.1 closed by remote host.
Connection to 192.168.1.1 closed.


 7. Confirm new bootloader:

# grep "(release)" /dev/mtd0ro
v2.10.0	(release):OpenWrt v2024.01.17~bacca82a-3 (mt7622-snand-ubi-1ddr)
v2.10.0	(release):OpenWrt v2024.01.17~bacca82a-3 (mt7622-snand-ubi-1ddr)
v2.10.0	(release):OpenWrt v2024.01.17~bacca82a-3 (mt7622-snand-ubi-1ddr)
v2.10.0	(release):OpenWrt v2024.01.17~bacca82a-3 (mt7622-snand-ubi-1ddr)