Disassemble the instrument does not apply to software maintenance and version of the chip combined models (such as Motorola mobile phones as early as Sri Lanka's L2000, 2588 Siemens, Motorola T2688, etc. Now the new series include mobile phones such as Motorola V988, V60, etc.). No matter-free device, or disassemble software maintenance with software maintenance disassemble instrument, write data before going to see the phone version, even if the same type of phone, due to its production date and different origin, its version number may be different, so phone in the maintenance process, the handling of the software must check its version, otherwise it will cause no such power or some of the functions fail. This kind of  Cellular Phone Jammer  has two models suitable to different locations.
In addition, many cell phone character with a BGA package, if not quite sure, especially for beginners it should not go to move him, because BGA package IC very high technical requirements for welding, heavy equipment to be used in specialized welding tool (BGA tin tool set), otherwise it will more repair more complex. As the software failure in the mobile phone service in the handling of the importance of making repairs in the mobile device manufacturers who introduced a variety of software fault repair instrument. Maintenance of processing techniques described above have mentioned, from the processing methods to points, mainly for the following categories: one is to remove the font or to rewrite the chip, -48, and other types of programmers; other disassemble a class is a free software fix. This model of   cell phone jammer can be used in the specific location.
Disassemble in the case of free software, rewrite the phone, can be divided into two situations: one is to use free computer, free software disassemble instrument repair service; another case with a computer, free disassemble software maintenance instrument repair. Although the tools for dealing with a lot of mobile software instruments, but in general is the use of software and tools to repair the phone MCU system error or rewrite the program information and to adjust coverage. This method is the correct chip or font data stored in a computer read them, when the phone is a software fault, the fault plane of the chip or the character to take down, put-purpose programmer to re-write software, data, and then re-solder the chip back or font. Different models of   mobile phone jammer   have different specifications.
These methods of digital phone service in the early use of them more, because the early mobile phone chip or font is easy to take down more than read and write, but because of the recent production of mobile phones are mostly character BGA package, inconvenient to take off. And manufacturers are taking the appropriate software encryption, so there are a number of mobile phone chip or font can not be removed to read and write, making the limitations of this approach will gradually be abandoned. In the software failure which caused some confusion but the software, such as "mobile phone is locked," this type of failure on the chip as long as the data processing can be resolved, because the software is not the amount of data, using a simple microcontroller can handle. However, due to the large amount of character data, this approach can not meet the general requirements of the microcontroller, so in dealing with software failures caused by the font used very little. The school will need more intelligentcell phone jammer system in large quantity.
The advantage of this approach is simple, do not disassemble. Drawback is due to the lack of family function on the memory chip capacity is limited and can only deal with simple faults. Shown in Figure 4-3-2 is used to modify the serial number of the free computer DTC4 disassemble the software maintenance-free instrument. As the memory data capacity is too large and BGA packages, so the use of the previous two methods are not well solve the problem. Storage capacity increases, the best means of computer. In order not to split font, preferably free way to disassemble the external data interface via mobile phone to mobile phone software for repair. The company will design a better program of  cell phone jammer  system.
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