I don't usually comment much in these forums, but as I've been messing with my Ascend again and trying out different roms, I thought I'd mention what I thought of this Jelly Bean Rom.
My usual rom is CM9.1 ("experimental" - maybe an early version, not sure) i.e. ICS but after getting a Nexus 7 for my birthday thanks to the Mrs, thought I'd try Jelly Bean on my Ascend. So I tried this rom which I must say appears to work well in all that I tested it with bar one, the battery drain - and boy does it drain! well at least compared to ICS CM.
For me I don't normally use my phone for anything other than the installed offline apps, so the likes of using Wi-fi, bluetooth, GPs etc are very rare. On the CM9.1 rom I can get an amazing 9-10 days on it with a few calls and a handful of texts every day, maybe a bit more if I didn't get worried about not having my phone charged and usable - this I think is pretty darn amazing. When I tell anyone else that, they can't believe me, but it's a fact. I've been using CM9.1 since Christmas.
This Jelly bean rom though discharges so darn quickly - charged to full at 6am, by 10am it was down to 90%!
So I went back to my original ROM last night and charged my fone, 3 hours later the phone still remports that I have 100% (probably not perfectly accurate, but what else can you go by?)
Other than a few Jelly Bean embelishments, such as the new clock, lockscreen and seperate pull-down notification areas I'm not missing much with ICS anywayz.
I also tried out the Electra rom last night, but it wouldn't install in CWM - back to ICS