[k-it]

Originally Posted by bandaska

Hi All,

I would like to ask you for help.
I am fighting with Tx,Rx pinout of watch phone Q8.
I did following measurement - I use low-end voltmeter :
12-pin mini USB connector
Pin number, voltage, the phone was switched OFF ! :

I count the pins from Left side to Right side. Holding the Male connector in hand before me. Is is correct ?

The Chip is MTK 6225
1- GRN
2- GRN
3- 0 V
4- 2,65 V
5- 0,14 V
6- 2,75 V
7- 2,82 V
8- 3,68 V - this is strange, to high ?
9- 1,38V (used for USB file communication, pinout of standard USB cabel)
10- 1,05 V (used for USB file communication, pinout of standard USB cabel)
11- V+
12- V+

I do not know how to find Tx and Rx. I though that 7. is Rx and 8. is Tx, but it looks incorrect.

I did not find Tx by the DIOD BEEP voltmeter diod. There is resistance on every pin to ground pin. When the phone is Switched OFF.

Some pins are powered when the phone is swiched ON, and at OFF state there is not voltage on those pins. Maybe some of these pins will be Tx ?
Can you help?

I tried Spiderman 2.55 and 2.50 with Crack, I tried FlashTools 6.18. with 7-Rx and 8-Tx, but no communication was in place. Just some nice picture of dolly and connected phone on the phone screen.

I am waiting for better voltmeter and will try to measure again, but sofare I am hopless.

PS. when I connect only 1,2 and 11,12 to the phone, the phone charge normally.

Thanks a lot
regards
Otto

Hi,
I have the same watch phone, I have change the touch screen but I have a red wire that I don't know where is souldered, help me please!