Nokia 105 Rm 908 Usb Pinout Here
If you need to recover data or flash a Nokia 105 RM-908, do not rely on the USB port for anything other than charging. Use a dedicated hardware flasher with test points. For charging cable repair, only VBUS and GND are required.
The Nokia 105 (RM-908) Go to product viewer dialog for this item.
is a legendary "dumb phone" from the 2013 era, known for its extreme durability and a battery that felt like it lasted forever. While modern versions of the Go to product viewer dialog for this item.
have Micro-USB or even USB-C ports, the original RM-908 was famously strictly for calls and texts—it didn't even have a standard USB port for data or charging. Instead, it used a 2.0 mm DC charging jack (the "thin pin" Nokia charger).
For hobbyists or technicians trying to "hack" or flash the firmware on an
, the "USB pinout" isn't a port you plug into, but rather a hidden set of F-Bus service points located under the battery. The "Under the Hood" Mystery If you pop out the battery of an
, you'll see a series of small gold pads. In the world of phone repair "stories," these pads are the secret gateway. To connect this phone to a computer, technicians don't use a standard cable; they use a specialized JIG or an F-Bus cable that snaps onto these points to communicate with the phone's internal processor. Technical Connection Points (F-Bus) Because the Nokia 105 Rm 908 Usb Pinout
lacks a native USB controller for data, users often look for the following pinout configuration on the motherboard to "resurrect" a dead phone: VPP: Voltage for programming.
TX/RX: The transmit and receive lines for serial communication. GND: Ground.
BSI: Battery Size Indicator (crucial for the phone to "wake up" during flashing). Why Do People Search for This?
The story usually begins with a forgotten security code. Since the phone doesn't have a menu-based factory reset that works without the code, and no USB port to plug into a PC, the only way to bypass it is to go "old school":
The 12345 Trick: Many users first try the default Nokia security code (12345). Hard Reset: Some try the *#7370# dial code , which only works if you can actually get into the dialer. The Service Port: When all else fails, the
is taken to a repair shop where a technician uses those hidden gold pins under the battery to "re-flash" the device back to life. In short, the Nokia 105 RM-908 If you need to recover data or flash
is a relic of a time when phones were built to be simple, and "connecting to USB" meant taking the whole thing apart.
Are you trying to bypass a security code or are you looking to flash custom firmware onto the device?
The Nokia 105 RM-908 is famous for broken micro-USB sockets due to mechanical stress. Here’s how to use the pinout to repair or bypass the port.
Most generic micro-USB cables do not connect pin 4 (ID) to anything. To make a reliable charging cable for the Nokia 105 RM-908:
Wiring (from USB-A male to Micro-USB male):
| USB-A Pin | Micro-USB Pin | Wire color (typical) | |-----------|---------------|----------------------| | VBUS (+5V) | Pin 1 (VBUS) | Red | | GND | Pin 5 (GND) | Black or bare | | No wire | Pin 2 (D-) | Leave unconnected | | No wire | Pin 3 (D+) | Leave unconnected | | GND (shorted) | Pin 4 (ID) | Connect to GND inside the micro-USB plug. | The Nokia 105 (RM-908) Go to product viewer
Crucial: Solder a jumper wire from Pin 4 (ID) to Pin 5 (GND) inside the micro-USB connector housing. This pulls ID low, signaling the phone to accept charging.
Without this connection, the Nokia 105 RM-908 will not charge from many power sources.
To access USB data (for flashing firmware or reading files), you must open the phone and use the test points under the battery.
Location: Under the battery, near the SIM card slot, usually covered by a small sticker.
Test point layout (6 points, often labeled TP1–TP6):
| Pin | Name | Function | |-----|------|-----------| | TP1 | USB_D+ | USB Data positive | | TP2 | USB_D- | USB Data negative | | TP3 | VBUS | 5V input (USB power detection) | | TP4 | GND | Ground | | TP5 | (N/C) | Not connected or test mode | | TP6 | RESET | Reset to download mode |
Key USB pins:
ℹ️ To enable USB mode, you must apply +5V to TP3 after connecting the battery, or the phone stays in charge-only mode.