For Sprint Tribute:-
ppp user=omhtest@omh.relianceinfo.com, ppp pass=S19121NB15CB112D in data in DFS also works. Disable all MIP profiles and make the first one active. This can be seen with SIM inside.
For removing Sprint hands-free activation:- dial ##3282#>6digitMSL>go to device self service and erase all ip, proxy and port entries. If blank section is not permitted, use your own https://xxxxxxx, port=xx, ip=xxx.xx
Phone will reboot and hands free activation is gone. Tested on RUIM pref mode with PRL 5 flashed while on NV mode.
Happy flashing !!