Could you please give me an advise? I want to change language support in China phone from English to Malaysia. Are The following step correct or not? :
1. Check Processor of the phone.

2. Connect the phone with PC. This step I don't know how to do

. I don't know which communication is using, COM or USB; and also the software manage this connection.
3. Install a new OS which support Malaysia language for phone.Where can I find this new OS?

Thank you.