TL'DR: Firmare 3.10 reversed the functionality of the reset button.
Hi,
today I wanted to upgrade my RB450G to v6.
It was runing v5.26 with firmware 3.8.
I uploaded the file routeros-mipsbe-6.9.npk via the webinterface and rebooted.
Firefox wouldn't then get past the "Loading..." page, but Chrome was able to continue. I saw that the OS version got successfully upgraded to v6.9. I was no longer able to use Firefox for the web interface. This seemed to be a minor issue as Firefox's console complained [18:32:39.242] TypeError: gums.name is undefined @ http://192.168.10.1/webfig/engine-38af2232b0db.js:1094
I rebooted the router a couple of times, this did not fix the issue.
I checked the Routerboard tab and saw that there wa a Firmware upgrade avaliable, so I told it to upgrade from 3.8 to 3.10, and the hit reboot.
I waited for up to 3 minutes for the 450G to become avaliable again, then I thought that I must have hit the shutdown button instead. I pulled out the power plug and pushed it back in again.
No beep, no nothing, I got really pale, no internet. I tried to get access via the Serial Console, but was out of luck, which was really strange, remember, it wouldn't even no beep.
Long story short, and don't tell me how lucky I got by letting the scissor slip off the reset button shortly after pushing in the power plug in (something about pressing it 10 secs for netinstall), the router beeped once, then the port lights started flashing, it beeped twice, all was ok.
So I thought that it may have fixed itself, pulled out the plug, pushed it back in: nothing. No beep, no console, nothing.
So I pulled out the plug, pressed the reset button, plugged the power in, released the reset button, et voilá, it booted just fine.
For some reason the Firmware upgrade to 3.10 reversed the functionality of the reset button.
Now my issue is that I whenver I want to reboot the device I will need to restart it with the reset button being pressed.
BTW: After the firmware upgrade Firefox worked again.
Kind regards,
Daniel