HOW TO USE ENGINEERING MODE

a) Capture network events live over USB and accessphone with other tools

You will need the database file so obtain it doing the procedure under a)

Activate USB Debugging in Developer Options

Open MTKLogger preferences

In ModemLog menu change Log Mode to “USB Mode”

Install MTK USB drivers

Install ADB drivers

Connect your phone with USB cable to your PC

Open Catcher.exe

Select in Config → Database path your database file (BPLGU...)

Start recording with MTKLogger *important*

Select in Configure Port → Conn. Mode“Smartphone USB Logging (MD1)”

Select in Controls → Set Filter what you want to display or just select all

Check Advanced menu out, there will be e.g. SIM/USIM Editor

How to edit NVRAM

Install MTK USB drivers

Install Maui META

Power off your phone

Attach your phone to USB → VCOM port should get installed

Open META (it needs admin privileges to create log files under C:/)

Select in Options → Connect Smartphone into META mode

Press Reconnect button

Attach powered off phone to USB

Power on the phone → Phone should get stuck on boot screen and fail driver install 

Open device manager, Select “ALL MTK Drivers” as driver update path

Gadget CDC VCOM appears

Detach phone from USB

Power off the phone (hold power key for 10 seconds or remove battery)

Close META and try again the steps 5-9

If not successful try again 5-9 and 12-13

META shows “Connected with target” → Phone is in META mode

Select NVRAM editor in drop down menu

Press “Read from NVRAM” button

Select database file (BPLGU...)

NVRAM Records that might be relevant for logging:

NVRAM_EF_PORT_SETTING_LID:
usb_logging_mode: 1
tst_output_mode: 1 (to file)

NVRAM_EF_TST_CONFIG_LID:
usb_dma_logging_enable: TRUE


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