Samsung B5330 tutorials:

For Read Codes on Samsung B5330 you need to have ROOT.

Root tutorial:
1. Download and extract "Samsung B5330 Root.rar" file from support or from https://hotfile.com/dl/196111338/39c..._Root.rar.html
2. Click Write Firmware and write "recovery.tar.md5"
3. Copy "Galaxy_chat_Root.zip" to SD Card, power on in Recovery by pressing Vol+ & Power, chose "apply Update from SD Card" and select this file. Confirm with Shift key then Reboot

ROOT - Video Tutorial:


Read Codes - Video Tutorial: