GSM-Forum - View Single Post - Watch phone Q8

bandaska · 11-12-2009, 22:48

Hi all,

HEUREKA, HEUREKA, HEUREKA

I did suceeded today and found Rx,Tx pins, I used Spiderman 2.50 cracked and download the Fimware of my Watch phone Q8 for backup.

The correct pins for Watch phone Q8 for flashing are these :
1,2 - Ground
6 - Tx
7 - Rx
11,12 - voltage

What were my steps? :
1) Find proper phone pinouts. You can search the internet, but you might have bad luck as I did. Watch phone Q8 is not described so I had to start my own search.
First you need to eliminate as much known pins as possible. I disassambled USB cabel and HandsFree cable. Though these cable I have eliminated 8 pins of 12 ! I found V++, Ground pins and other no use pins for flashing.

Than I solder cables to all unknown pins for getting voltage measurement and various combination to find the Rx or Tx pins.

BE TO SURE NOT SHORTEN ANY CABLES. THE INSIDE PHONE ELECTRONICS MY BURN OUT. I WAS LUCKY AND DID NOT DESTROY MY PHONE

Than you have to measure the voltage. BE SURE TO USE MIDDLE QUALITY voltmeter. I first used low-end voltmeter and that costs me one week of time because it was not good. My new middle quality voltemeter - costs me 39 USD is more accurate, but it is worth it.

Measure phone with OFF and ON state. The ON state is more important.

I did measurement and found that the 3 rest pins has voltage around 2,75V. The last one pin has almost 4 Volts, this one is direct batter power (it does not change the voltage when you switch ON and OFF the phone) and is no use. (Thanks hf_mode)

The method of finding Tx using the DIOD BEEB IS NOT WORKING FOR THIS PHONE !!! There is resistance on every pins towards GRN at ON or OFF status.

Then I purchase a little square, which is use to build some schematics and for testing purposes. I used it to connect cables to it and simply try to rotate those 3 cables soldered to phone connetor pins which has 2,75 V.
I tried various combinations. After each combination I tried to connect the phone to Spiderman 2.50.
Be sure, that one combination is correct. I had 6 combinations with 3 cables

Then I found Tx, and Rx. Previously I known V+ (voltage pin from USB) and GNR (negative volage from USB).
This was the hardest part.

2) I purchased a USB to COM cable. It is a cable with USB connector and some phone connector on the other site. Between is chip which emulate COM port, there is CD with drivers to Windows and new port will apear in the Windows system. Very ofter it is chip PL-2303 (my was PL-2303HX). I found a schematics of the chip and found where is Rx, Tx, GRN, and V++. Then I use magnifying glass to find the ways from the chip to the pins of the cable on the chip board. Than you have to cut the non correct phone connector and solder correct your phone connetor.
Because I purchased USB to COM cabel for LG old phone, the connector did not fit to my Watch phone Q8 for which I purchase mini USB 12-pin connector over the ebay. So I cut the LG connector and solder Watch phone mini USB connector. I solder it to proper pins.

3) I found and downloaded Spiderman 2.50 cracked software. Thanks to you someone, who published this software.
I press Connect, switch to the proper Windows COM port, left the com data speed to highest level.
Then I first try the BOOT button. Before I pushed the BOOT I connected switched OFF Q8 phone. After pushing BOOT button SpiderMan asked me to switched the phone ON and HEUREKA, phone communicated.
After the boot I did READ and download full flash, as Spiderman 2,50 recognize the MTK 6225 chip correctly.

Thats all. Now I can do some experiments with the firmware

Good luck
bandaska

11-12-2009, 22:48	#3 (permalink)
bandaska Junior Member Join Date: Oct 2009 Posts: 27 Member: 1140221 Status: Offline Thanks Meter: 8	Finding Tx and Rx for Watch phone Q8 - solved Hi all, HEUREKA, HEUREKA, HEUREKA I did suceeded today and found Rx,Tx pins, I used Spiderman 2.50 cracked and download the Fimware of my Watch phone Q8 for backup. The correct pins for Watch phone Q8 for flashing are these : 1,2 - Ground 6 - Tx 7 - Rx 11,12 - voltage What were my steps? : 1) Find proper phone pinouts. You can search the internet, but you might have bad luck as I did. Watch phone Q8 is not described so I had to start my own search. First you need to eliminate as much known pins as possible. I disassambled USB cabel and HandsFree cable. Though these cable I have eliminated 8 pins of 12 ! I found V++, Ground pins and other no use pins for flashing. Than I solder cables to all unknown pins for getting voltage measurement and various combination to find the Rx or Tx pins. BE TO SURE NOT SHORTEN ANY CABLES. THE INSIDE PHONE ELECTRONICS MY BURN OUT. I WAS LUCKY AND DID NOT DESTROY MY PHONE Than you have to measure the voltage. BE SURE TO USE MIDDLE QUALITY voltmeter. I first used low-end voltmeter and that costs me one week of time because it was not good. My new middle quality voltemeter - costs me 39 USD is more accurate, but it is worth it. Measure phone with OFF and ON state. The ON state is more important. I did measurement and found that the 3 rest pins has voltage around 2,75V. The last one pin has almost 4 Volts, this one is direct batter power (it does not change the voltage when you switch ON and OFF the phone) and is no use. (Thanks hf_mode) The method of finding Tx using the DIOD BEEB IS NOT WORKING FOR THIS PHONE !!! There is resistance on every pins towards GRN at ON or OFF status. Then I purchase a little square, which is use to build some schematics and for testing purposes. I used it to connect cables to it and simply try to rotate those 3 cables soldered to phone connetor pins which has 2,75 V. I tried various combinations. After each combination I tried to connect the phone to Spiderman 2.50. Be sure, that one combination is correct. I had 6 combinations with 3 cables Then I found Tx, and Rx. Previously I known V+ (voltage pin from USB) and GNR (negative volage from USB). This was the hardest part. 2) I purchased a USB to COM cable. It is a cable with USB connector and some phone connector on the other site. Between is chip which emulate COM port, there is CD with drivers to Windows and new port will apear in the Windows system. Very ofter it is chip PL-2303 (my was PL-2303HX). I found a schematics of the chip and found where is Rx, Tx, GRN, and V++. Then I use magnifying glass to find the ways from the chip to the pins of the cable on the chip board. Than you have to cut the non correct phone connector and solder correct your phone connetor. Because I purchased USB to COM cabel for LG old phone, the connector did not fit to my Watch phone Q8 for which I purchase mini USB 12-pin connector over the ebay. So I cut the LG connector and solder Watch phone mini USB connector. I solder it to proper pins. 3) I found and downloaded Spiderman 2.50 cracked software. Thanks to you someone, who published this software. I press Connect, switch to the proper Windows COM port, left the com data speed to highest level. Then I first try the BOOT button. Before I pushed the BOOT I connected switched OFF Q8 phone. After pushing BOOT button SpiderMan asked me to switched the phone ON and HEUREKA, phone communicated. After the boot I did READ and download full flash, as Spiderman 2,50 recognize the MTK 6225 chip correctly. Thats all. Now I can do some experiments with the firmware Good luck bandaska