North America region, A1 hardware version.
I was getting an Upgrade failed message. Using a direct ethernet connection to the router. Using Chrome browser and yes I extracted the bin from the zip.
I tried twice, and got the Upgrade failed message. I did a reset through the Admin page and it failed again. I held down the reset button on the back and this time it said the Upgrade worked. I was able to briefly connect and saw that it still said version 1.01. Then it kept locking up and rebooting. I got on the phone with support and while I was on hold it pressed the reset button again. I was able to connect, and after two more tries with tech support on the phone I was able to get the firmware upgraded. Had to the turn the router on and off a couple times before I was able to get connected to it. Then it seemed to be working and tech support hung up. I started doing some configuration and it eventually went into a boot loop. I watch the lights all turn blue, then after a couple seconds they all turn off, and then the power button goes orange to blue, etc. and it just kept doing that. I pressed the reset button again, was able to go through the wizard and get the basics set up and after a couple minutes it went into the boot loop again.
I was out of time so I haven't called tech support back, but so far, the 880L sucks. I have spent way more time messing with it than my DIR-655.