Digital STB working principle introduction:
Radio and TV set-top box encryption system, referred to as CA system, pay channel is actually CA encrypted channel, must be authorized by radio and television to be able to decrypt.
After the MPEG2 stream is scrambled by the universal scrambler, it is necessary to restore the key. This key is CW (Control Word). The decryption process of different home CAs is to restore the CW and send it to the set-top box descrambler. The set-top box receives the scrambled and multiplexed TS through the high-frequency head. First, the set-top box demultiplexes it (Demux), and extracts the encrypted ECM and EMM from the set-top box to the IC card. The IC card calculates the CW. The control word is transmitted to the descrambler. The descrambler restores the scrambled stream according to the control word and outputs the clear stream. That is, the unencrypted stream is passed to the decoder for the decoder to perform MPEG2 normal decoding. This is the work of the digital set-top box. principle.
Digital set-top box crack method introduction:
This step upgrades the STB serial port and uses a serial cable to connect the PC to the set-top box. The first step: open the "mini terminal MINICOMM"; the second step: in the "communication", click "establish connection", serial port setting key appendix 1 serial port setting; the third step: keep pressing "enter Enter"; Four steps: Turn on the STB power supply; Step 5: Wait for the mini terminal to appear: testtool> ; Step 6: Enter "* boot" and press Enter. The message appears: Waiting to send the boot from the serial port ... Step 7 : In the "Communications" menu, click "Send File" to pop up the directory box, find the program to be programmed (boot_rs232.bin), and open it. Then wait (approximately 8 minutes). Until testtool> appears. Note that the boot is completed; Step 8: Restart the set-top box (or type *reset). The ninth step: use the upgrade tool "STB*-Search.exe" to upgrade the program (STM5105_program_*.bin), font (SHUYUAN_font_*.bin), loader to use normally
After the crack is complete, you can freely install various types of software, such as sofa butlers, free movies and HDTV live broadcast.
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