Running .167
Installed most current OS linked from BBforums, installed Desktop manager 4.7
Plugged into desktop, selected App loader, ticked BB maps
From the handset i instaleld a non vendor theme ota:
http://www.onthearm.com/otajad/com_p...o2_no_wrap.jad
And Voila! BB maps working on ATT and even liked in the PIN messaging!
Now hopfully this means ATT no longer has blocked the service books and will be allowing BBmaps in the near future
(taking a wild guess from the recent addition of MSN, AIM and ICQ service books available on the ATT network)