Leave pins 2,3,4 unconnected.
The Nokia 105 RM-908 relies on a specialized MediaTek or PMB processor variant depending on its production batch, operating on an ultra-low power layout. Unlike newer revisions of the Nokia 105 that feature factory-soldered micro-USB or USB-C ports, the classic 2013 RM-908 relies purely on a for charging.
On the RM-908 board, the test points are often arranged vertically near the bottom edge:
| Phone test point | USB-TTL Adapter | |-----------------|-----------------| | TP-51 (RX) | TX (3.3V) | | TP-52 (TX) | RX (3.3V) | | GND (any ground) | GND | Nokia 105 Rm 908 Usb Pinout
Pin 1: VBUS (Red) Pin 2: D- (White) Pin 3: D+ (Green) Pin 4: ID (NC / GND via resistor) Pin 5: GND (Black)
If Windows displays a "USB Device Not Recognized" error, check your solder joints. Ensure the RX and TX lines are not flipped, and verify that the MTK VCOM drivers are correctly installed in your Device Manager.
Uses a 2.0mm barrel jack (no data).
While the factory default is usually 12345 , forgotten codes often require "flashing" the device using the USB data pins (D+ and D-) and specialized software.
What or issue your Nokia 105 is currently having (e.g., contact service, security code, dead boot)? Which repair tool or box you plan to use?
A microscope is helpful to see the tiny connections. Leave pins 2,3,4 unconnected
This report details the hardware pinout configuration required to establish a USB connection for the Nokia 105, model designation RM-908. This specific model utilizes a proprietary pad layout on the main PCB (Printed Circuit Board) for flashing, servicing, and data transfer. Accessing these pins requires opening the device casing, as the standard consumer interface does not utilize a traditional USB port.
If your device is functional and you only need a standard reset, try these codes before attempting hardware-level pinout modifications: 12345 . Soft Reset (Factory Settings): *#7780# . Hard Reset (Full Data Wipe): *#7370# .
The connection points are located on the main motherboard. You must identify the test points to solder or press probes against the board. On the RM-908 board, the test points are
