i had similar problem with root explorer, my changes were not saved.
i extracted the file using root explorer (since its working fine with file moving operations), modified it using vi editor in my ubuntu installation, and pushed it again. it worked !!
also try to use stock build.prop first.
if nothing works on your end, send me the stock build.prop, i can modify it for you.
Originally Posted by MatteXperiaU
i can't edit build prop..es explorer says me error.. i have xperia u and JB by kontini
and if i edit from pc, i have bootloop
working with build prop editor
press it if some one helps you. cheers !
My device : Sony Xperia Go
Bootloader : Locked
ROM : Stock JB .100 (own modifications)
AnTuTu Benchmark : 9758