A situation where a cell phone starts to malfunction usually forces its owner to seek help from a service center or look for an opportunity to solve the problem on their own. In many cases, the only way out is to rewrite the phone - that is, to change the data recorded in its memory (permanent memory).
Necessary
- - data cable;
- - special programs.
Instructions
Step 1
Quite often, phone malfunctions are associated not with hardware malfunction, but with problems in its firmware. Firmware in a cell phone is understood as the whole complex of its software, including hardware settings. The firmware for each phone is unique, so they are usually not interchangeable. Although in some cases it is possible - for example, it is possible to install the firmware from the 6250 on the Nokia 6210, in the end the user will get all its capabilities. Changing the firmware to a newer one can not only save the phone from crashes, but also give it an improved design and a number of new functions.
Step 2
Permanent Memory (PM) is an area of flash memory. With ordinary firmware, the permanent memory is not affected, since it contains information important for the phone's operation, for example, power settings for the device's nodes, calibration of the radio path, protective blocks, etc. Each such unit has its own name, for example, unit 1 - radio path calibration, 308 - safety certificates.
Step 3
To read and fill PM, use specialized programs designed for the model of your phone. For example, Nokia phones require JAF to read and write PM files to the phone. For phones of other brands, you can also find the corresponding programs. It is recommended to download the required software from the manufacturer's website.
Step 4
When flashing, the phone connects to the computer with a data cable. Please note that some phones, such as Samsung, require a dedicated firmware cable.
Step 5
Before starting work, you must completely copy all the memory, this will allow you to restore the original state of the phone in case of any erroneous actions. The firmware process itself is carried out on the switched off phone with a charged battery. You need to work on a computer with an uninterruptible power supply or on a laptop with a charged battery. Any power failure during the flashing process can render the phone unusable.