Release 9.4(2)SR2 can only be upgraded from 9.3(4) and later. Releases prior to 9.3(4) have to be upgraded to 9.3(4) first. this is correct.you may also need some more step upgrades to reach to 9.3(4).
you need to upgrade the phone to following firmware.sip 9-3-4-17.the only issue is phone upgrade its firmware one by once mean to get to this firmware you me need to upgrade you firmware four time to previous versions.then use any available XML to lo...
do you have any success with 8941? i need help if you have done this.please let me know which firmware you have used also it would be best if you share one sample .cnf.xml file.