RUIM can access by flash radio rom to U version (1.08.99U or 1.08.A3U).But I got problem with customize some parameter in EPST ##778#.... 
In MIP Default Profile and Security tab,some parameter not update when new setting,it back to original as rom setting....(such as PPP USER it back to myIMSI@mycdma.cn) 
It may be need changed to other Radio version,Any one know which Radio support RUIM card? 
Thanks in advance. 
Please advise.