GPRS fails with RSU 4.20 4.21
After upgrading my O2 XDA 64Mb (was 32MB upgraded by expansys), it no longer connects to GPRS.
I have tried both the mobile web and wap connections, but the message i get is
"There is not answer at the number dialed. Verify phone number and then try again. To chage your connection settings, tap Settings. If the problem continues, contact your ISP or network administrator."
This was a 'clean' upgrade (ie. I haven't restored any backup after the reset). I am now on 3.17/4.21 ENG O2 versions.
Any help appreciated.