Asus RT-AC88U stuck in the middle of sysupgrade

My router is Asus RT-AC88U running OpenWRT 24.10. I'd like to upgrade to 24.10.1 but the Attended Sysupgrade in the UI is stuck at 50% since hours.

Is this a known issue?

Are you in the image generation phase, or in the flashing phase?

If in flashing, you might just try from another browser window to see if the post-flash boot has actually happened, but the browser sessions doesn't recover.
(sometimes the SSL things are picky, and wont return to the old session)

See LuCI Attended Sysupgrade support thread - #76 by efahl

Giving up the Attended Sysupgrade methode, I tried to flash the standard build openwrt-24.10.1-bcm53xx-generic-asus_rt-ac88u-squashfs.trx but, once again, it did not complete. The little wheel is spinning forever. Neither ssh or web UI is reachable anymore.

I tried to reboot. No luck.

Failsafe mode is OK.
What should I do from here?

aruclim@optiplex ~ % ssh root@192.168.1.1      

BusyBox v1.36.1 (2025-04-13 16:38:32 UTC) built-in shell (ash)

  _______                     ________        __
 |       |.-----.-----.-----.|  |  |  |.----.|  |_
 |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
 |_______||   __|_____|__|__||________||__|  |____|
          |__| W I R E L E S S   F R E E D O M
 -----------------------------------------------------
 OpenWrt 24.10.1, r28597-0425664679
 -----------------------------------------------------
================= FAILSAFE MODE active ================
special commands:
* firstboot	     reset settings to factory defaults
* mount_root	 mount root-partition with config files

after mount_root:
* passwd			 change root's password
* /etc/config		    directory with config files

for more help see:
https://openwrt.org/docs/guide-user/troubleshooting/
- failsafe_and_factory_reset
- root_password_reset
=======================================================

root@OpenWrt-failsafe:~# 

Run firstboot and see if that clears things out. If that fails, maybe try downloading a new image and doing sysupgrade again???

Yes. That was the thing to do.
I lost all my settings but at least, I am running the latest OpenWRT version!
Thanks for the help.

1 Like

firstboot resets to device defaults, so does indeed wipe out your settings, but the old settings were likely the culprit.

When crossing release boundaries, say 23.05 -> 24.10, there are sometimes changes in the device drivers that can't be dealt with except by starting afresh. Things like changes in device naming or enumeration order are the most common ones, and are more common when a device is still newish, usually stabilizing after a few years.

That's why I did NOT try firstboot and went directly to sysupgrade !

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