Virtual USB to Serial COM Port for Flashing Chinese Phones

If you do not have any flashing box for chinese mobile phone it's good idea to try the hidden secret of the box that you have now. this tips just using feature a virtual COM port. COM Port Emulator or also called a USB to Serial interface is also commonly found on the Prolific device in DKU5 data cable.

Let's see what the virtual port device that you have now?.
This below picture shown installed virtual device on my PC right now.





The following image is an example pinout taken from setool or cruiser box that will be used for flashing chinese phone later.

The function of the diode is shown in the picture is to lower the voltage from the USB 5volt and dropping down to 4.7volt. This voltage is sufficient to provide power to the phone that will be in flashing mode or normal mode. You can also use the diode 1N4007 1N4001 1 Amp. For its own flashing cable can be obtained from 8pin RJ45 cable from UFS box and any others similar.
Basically the two boxes on the image above has a similar parts and components.
I'm just giving an example modification only in the cruiser box because this box has a high stability in flashing mode.

Question & Answer about this modification

Q: Then, how can I find the pinout on the phone itself?
A: In the box that appears in the picture there is no automatic pin finder feature. U must dissasembly the phone then you have to look at the mobile phone PCB, searching manualy for RX, TX VBAT,GND sign.

Q: Hey, on the phone PCB board there is no sign of any RX or TX then how do I find it?
A: Use Your multimeters to find it...I will guide you how to find RX TX PIN on phone PCB board
on the next post...

Q: What flashing tool that you use to flash the chinese phone with this modification box.

A: Free Spiderman box software or MTK FLASH TOOL

Thanks..

I hope U understand in this tutorial.
Sorry for my bad English. LOL
Good Luck