Hi there, I find the sound I hear from the phone when I am talking to somebody is too low and ppl said I could change the acoustic driver. How do I change the acoustic driver in the k550?

Moved to Firmware Section

http://forums.se-nse.net/index.php?showtopic=17452

http://forums.se-nse.net/index.php?showtopic=16379

Hi, thanks for the reply. The CID on my phone is 53, does that mean I won't be able to do *any* customization with my phone? I saw some ppl saying another program called jdflash (or something to that effect) would be able to do it, but some other ppl said it won't be able to and it would not be safe for the phone.

Yeah jdflasher can do it.

Which version and what method do I have to follow to do it properly? Could it really damage the phone?

Look in Research and Development. Any program can damage your phone with misuse. Also Firmware Tutorials and Guides is a good place to look.