Troubleshooting tips: updating router firmware and GUI language table error

my router was a ax6 ax4300, wasn't in the list for some reason.   I had a solution that might be a little less painful than a hardware reset of the whole router.  When you get that "updating GUI language" message the install hasn't finished initializing the router.   If found that if I just killed the whole browser session with the "updating GUI language only take a minute" message and started another one, it let me initialize the router again from scratch and that worked.   Obviously I declined to update the firmware (do it later, after you are initialized) the second time around.  I was doing this with an ipad with a keyboard and maybe that was a problem but it also seemed like it had a bug where if you used that same browser session to login to the admin console again it rejected your valid admin password.   Kill you browser session and use a new browser session to login as admin.