Several software tools are available for interacting with the Nokia 105 RM 908, including:
Before reassembling, connect the charger and verify that the "Charging" screen appears. Important Distinctions (RM-908 vs. New Models)
Need to unlock or flash a classic Nokia 105 RM-908? Since this model lacks a standard USB port, you'll need to use the hidden test points on the PCB. VCC / VBAT: Power Supply (+) TX: Transmit Data RX: Receive Data MBUS: Control Line GND: Ground (-) Pro Tips:
If you’ve flashed a corrupt firmware (e.g., via Infinity Box or MX Key), the phone may be dead. You need to enter using the USB pinout plus a hardware test point. Nokia 105 Rm 908 Usb Pinout
In this configuration, only the VBUS and GND pins are wired. The data pins (D- and D+) are left unconnected, which is why the phone can only charge via USB.
When looking at the phone's logic board with the Micro-USB port facing downward, the pins are laid out in a specific sequence. Standard Micro-USB ports have 5 pins.
For , only three pins are necessary:
If the copper pads (vias) are torn from the PCB, you cannot simply solder a new port. You will need to jump the connections.
A hot air station is recommended for removing the USB port, while a fine-tip soldering iron is needed for soldering the jumper wires.
: For data operations, ensure you install the "MediaTek USB VCOM Drivers" on your Windows PC. Without these, flashing software will not detect the RM-908 chipset even if your wiring is physically perfect. Several software tools are available for interacting with
| Pin | Name | Function | |-----|------|-----------| | 1 | VBUS | +5V (Charging power) | | 2 | D- | Data line negative (USB 2.0) | | 3 | D+ | Data line positive (USB 2.0) | | 4 | ID | Identification / On-The-Go (OTG) | | 5 | GND | Ground (0V) |
Do not confuse the 2013 RM-908 model with newer Nokia 105 variants.
frequently requires a "Hard Reset" via flashing if the security code (default ) is lost and the manual battery-drain method fails. Safety and Requirements Since this model lacks a standard USB port,
This is the round port visible on the bottom of the phone.