Dell me with a direct link to the BIOS update to try, it got stuck in the same spot again. Then I had an idea. My keyboard always behaved a bit strange in the BIOS, so I replaced my keyboard with a stock Dell keyboard and tried the BIOS update again. This time it worked, so interesting failure there. For reference I was using a Ducky One 2 SF keyboard everytime it failed.
Hi, I have a new(ish) R11, I got it in November. I did a BIOS 1.0.3 update using a USB stick and installing from the F12 boot menu. The update went fine at fist, but got stuck at "Verifying programming EC status" at 99% I left it for 2 hours then contacted Dell support who told me, after an hours of back and forth, to pull the power. (yes, Dell support told me to pull the power). The PC booted fine after than and everything seems to work OK. A while later I noticed my RAM running at 2666 instead of 3200 and I cannot adjust it via the Command Centre. After digging around in the bios I figured out setting memory to XMP2 resolved that problem, but I still contacted Dell support to let them know that there is potentially a bug around. Dell support then told me to update to BIOS 1.0.4 and the exact same thing happened again: BIOS update went fine at fist, but got stuck at "Verifying programming EC status" at 99%. Again I was told to pull the power and again the machine booted OK and the BIOS version does seems up to date. This leaves a lot of questions: This is a quick photo I took when it got stuck on the 1.0.4 update [IMAGE]  
Aurora R11, BIOS update gets stuck at 99%