Tutorial Convert RAR/ZIP File to FTF

1) Download and install Flashtool program on your computer
2) Extract your RAR/ZIP File to C:\Flashtool\firmwares So at C:\Flashtool\firmwares you can found files that you have been extracted, for example you can found loader.sin,kernel.sin,system.sin etc.
3) Run Flashtool program on your PC, go to menu decrypted files. Browser files the that you have been extracted
4) From Files, select all (Click & Ctrl + A) and click -> to move the 2 files to Files to convert
5) Click OK
6) Wait patiently till it finishes...
7) From Folder list, select all (Click & Ctrl + A) and click -> to move the 2 files to Firmware content
8) On Device write the model [ex. Xperia X10 Mini Pro(U20i)], on Version write the firmware version and/or the Android version [ex. 2.1.1.A.0.6 (Eclair_2.1)], on Branding write the region and your name if you wish [ex. Xperia].
9) Click OK
10) On Device Selection choose the device it is for (ex. U20i)
11) Wait very patiently...
12) When it finishes the .ftf file is located on C:\Flashtool\firmwares