This is an odd question, but I wanted to see if I downgraded to Cyan (if it's even possible) and messed around with access point, that maybe I could work-around the SMS issue on 3g. I have looked but couldn't really find anything.
Icon never got Cyan. Do you really mean the firmware or do you want to go back to 8? For either, only thing I can think of is the old Nokia Software Updater for Retail but the servers probably aren't available any longer.
I'm using my Icon on T-Mobile and there's a bug (that applies to all Icons on T-mo) where you cant send SMS on 3g most of the time. I get around it by keeping it set to 2g as I'm mostly around Wi-Fi. I can get SMS/MMS on all bands, it's just the sending. I'm on 8.1/Denim the latest firmware.
Flashing a 930 ROM? I did look into that just can't find out how. I wonder if I did that if I could access the field test mode as you can not on 929 ROM. Would I lose any bands?
Bands, I dont think so as they are hard coded into the phone (not sure a fimware could change that), If you want to look into this route, I might suggest doing some reading over at XDA... Pretty sure it is possable
Would be nice if someone could HACK the bands on a phone...We could be using a 950XL on Verizon...(chipset DOES support CDMA on the phone) and that would be cool..