I seen so many guides on the internet many are confusing. So here one i summarize for you guys. Do let me know if you face any problem
TRY IT AT YOUR OWN RISK
Doing the installation below might void your warrantySection ADownload all the necessary files below and BACKUP ALL YOUR FILES via OVI SUITE
a) Phoenix Service Softwarehttp://www.4shared.com/get/2noUN5lt/Phoenix_Service_Software_20104.htmlb)Anna http://www.mediafire.com/?kwn3bz7r3apaqjcc) Bellehttp://www.mediafire.com/?zr6csfhpcrbu7suPassword : orvvan + mohamad 79
Section Ba) Phoenix Service SoftwareInstall this software in your computer
b)Anna Extract the folder to C/Program Files (x86)/Nokia/Phoenix/Products/RM-596
c) BelleExtract this to your computer desktop ( There should be 4 files)
Section CStep 1 a) Run Phoenix Service Software
Step 2 file>open product>RM-596 Nokia RM 596 and press OK. (Make sure your phone is connected to your PC )
Step 3 On the top left corner of Phoenix, you will see "Connections:" followed by a drop down menu bar. Click the drop down menu and make sure "NO CONNECTION" is selected.
Step 4 Go to Flashing>Firmware Update. Under Product code, click the box on the right side and select one of the variants and press OK.

* If nothing appear try turning off your phone and try again
Step 5 Check "Dead phone USB flashing"
Step 6 Click Options > edit and select your desktop files (aka belle files) as below
RM-596_022.014_79.92_prd.core.fpsx --> RM-596_111.010.0606_79u_prd.core.fpsx
RM-596_022.014_28.01_Chinese_PRC_79.92_prd.rofs2.fpsx --> RM-596_111.010.0606_13.01_MEA_A_79u_prd.rofs2.fpsx
RM-596_022.014_C01.01_PRC_79.92_prd.rofs3.fpsx --> RM-596_111.010.0606_C04.01_MEA_1_79u_prd.rofs3.fpsx
RM-596_022.014_U02.01_79.92.uda.fpsx --> RM-596_111.010.0606_U07.01_79u.uda.fpsx
Step 7IMPORTANTMake sure RM596_APE_ONLY_ENO_11w15_v0.148.fpsx and RM-596_M025.44.emmc.fpsx are
DELETED.Before you flash it should look like this
Step 8Click OK and select refurbish
Step 9Follow the instructions when you're prompted to from Phoenix.
Note: If they ask you to hold the power button for 8 seconds, hold it for a little longer (probably for an extra second), till your phone vibrates for a few times.
Step 10I do not recommend you to restore your apps/games. Reinstall them manually.
Step 11Reformat your memory card and hard reset your phone again using *#7370#
Step 12Restore your data and welcome to Symbian BELLE
Credit goes to Macwai and orvvan for making this