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[Please help] Zopo zp980+ very strange brick , driving me crazy

#21

update : found a pl2303 usb to serial converter laying around and I started my tests...
9600 8 1 n 
nothing seems to come out from the usb port in any phase .
something interesting happens instead on the headphones output connector , I can see a character flow and I think its only a matter to find the right bps speed cause now I just see rubbish going through the serial port , that usually means a wrong data connection speed.
anyway the rubbish data flow looks to have a fixed behaviour that looks promising Smile


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#22
update : found a pl2303 usb to serial converter laying around and I started my tests...
9600 8 1 n 
nothing seems to come out from the usb port in any phase .
something interesting happens instead on the headphones output connector , I can see a character flow and I think its only a matter to find the right bps speed cause now I just see rubbish going through the serial port , that usually means a wrong data connection speed.
anyway the rubbish data flow looks to have a fixed behaviour that looks promising Smile the output starts as soon as I connect the phone to a power source
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#23
who knows the lk serial port speed during early init?
I can't get the right one
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