WHAT’S JTAG ?
JTAG is an interface that you can make urself or buy which allow you to erase and reprogram ur receiver’s flash rom.Why u should use this JTag?In case of ur receiver become unusable bcoz. of upgrading with wrong software or if you upgrade with wrong method.Meanwhile u need a special software to alive ur receiver again.That’s JTag.
jKeys is a program primarily used to access memory on IRDs. It works by utlizing processor diagnostic devices via the JTAG port. This software has been used on STMicroelectronics STiXXXX (ST20 based core) and LSI SC2000 processors.
Your receiver flash rom can be erase and program again and again like a CD RW.Uploading wrong firmware into your receiver will not damage your flash rom but only render your receiver useless.If you happen to load the wrong file into your receiver you can use Jtag to reprogram ur flash rom.
If Jtag can read your flash rom , box keys then the flash rom has no problem.It’s more safer to use Jtag than to use Null modem cable to upgrade your receiver.
JTAG for ALI 3329B and 3329C
How to make cable
Link only 5 of resistance
Bind the wires (not exceeding 15 cm at most)
Don’t forget to paste Jp1 legs together
First install device JTAG cable
II then installation inst _ giveio
Third open program EJTAG _ TT and then the following counters