Android devices typically never get the kind of manufacturer support that we all want, and that’s the case with the original Transformer. The TF101 and its close cousin, the TF101G (which includes radios for 3G connectivity) have gotten ports of multiple, fully functional Jelly Bean ROMs. Unfortunately for the TF101G, the 3G radios aren’t functional in the ROMs developed for the TF101, and so anyone using those newer ROMs lose 3G functionality. And of course it’s not fair to give users the choice between losing features they paid for or staying on older software.
XDA, like always, to the rescue. One dev has figured out a way to get those 3G radios working on the TF101G. It’s still only an experimental build of Cyanogenmod 10, and it’s appropriately labeled a WIP, but if you’re the owner of a Transformer and you’re really missing 3G functionality on Jelly Bean, this is a great breakthrough for you. The dev is also planning on releasing source later for anyone to help out.
So if you’re feeling adventurous today, give the build a shot. The dev is asking for feedback, since it is still an experimental build that may have some bugs. But sometimes that’s the fun part of flashing, isn’t it?