Install the Nokia USB Drivers and the Phoenix Service Software on your PC.
A complete flash package typically includes several file types: Main Core Unit. Post Programmable Memory (contains language data).
Before you can flash your Nokia RM 714, you'll need to download the flash file. Here are the steps:
Flashing an RM-714 requires careful identification of the correct firmware, correct tools, and attention to NV/IMEI data. With proper procedures and precautions, reflashing can recover many software faults and restore devices to working order.