The important things for security of upgrade :
- Handphone battery minimal 50% full. Because process upgrade will use a lot of electricity.
- Stop all programs on monitors PC or at taskbar your computer. it's for save your computer from malfunction caused of upgrade program.
- You can upgrade from v01 to v20 at the same time. After upgrade to higher version, So you can't downgrade it to lower version.
- Switc-off handphone and Discharging it's sim card.
- Switch-on handphone without SIM card.
- Connect datacable from your PC to handphone.
- Runing software upgrade and Following the scent at software.
- After finished, Switch-off handphone and Resetting SIM card you.
