can someone help me to install elf on my c905

i have se c905 r1ba042 cid 52 can i install elfpack
if yes help me to do that

You must change your c905 to CID BROWN, just so you can apply patches. Please read this tutorial:

[TUTORIAL] Method to install elfpack on Sony Erisson Phones

Questions here:

Discussion and questions about installing ELFPack