Practical tips to replace the iphone system sound Easy Tutorial

I have long been tired of the iphone's own system default ringtones, always want to change the tone of their favorite personality, but must pass 91 mobile phone assistants and so on to replace the ring. and 91 mobile phone assistant because will cause white apple, have been lazy to install use, is there no way? itunes to implement the iphone system default ringtone modification tutorial actually, in addition to the 91 phone assistants, we can modify the iphone's default ringtone by the following way. iphone system default Ringtone revision tutorial: 1, download and install PC Sync software ifunbox (click to download); 2, after Ifunbox connection, enter/system/library/audio/uisounds path General iphone system default ringtone format is CAF, to replace where the special effects sound, preferably with the same length or similar, you can make music to intercept the desired sound, change the format, and then replace the file with the same name. In this process, many users may doubt the issue of permissions. This in the use of Ifunbox process is not necessary to consider, direct connection modification can be replaced.