Instructions on firmware update Huawei E3372H


Today we will share step-by-step instructions on how to prepare Huawei modems E3372h various modifications for working with Peer2Profit. 

Equipment preparation

We start by replacing the software installed on your modem. So that the application works correctly, we will run a firmware with a needle and put our branded software.

For convenience, we will prepare an accessory that will allow proper firmware.

  1. Take a computer USB extension, soldering iron, a metal needle (sewing) and a piece of wire or a fairly rigid piece of conductive wire.
  2. Solder one of the sides of the wire or wire to the needle. 
  3. Connect the other side of the wire to the USB extension, which is inserted into the modem.
  4. For strength, wrap everything with insulating tape.

If you are working with a wire, attach it to the mass of the same connector. This is not very convenient, but simply manufactured.


If you are working with a wire, you can try a deeper upgrade format and install open buttons. This format is more convenient for work, but it is more difficult to prepare.

To do this:

  • carefully grind the insulation in the middle of the cord;
  • find the red wire;
  • press the microcoppers into it. When it is not pressed, it will close the contact, when it is pressed, open it.


Preparing Your Computer

The software on your computer also needs to be ready for firmware.

  1. Take a computer with installed Windows 7. The device should work fast enough, have serviceable USB inputs. The memory of your laptop or computer should not be clogged — this depends on the speed of the process and the occurrence of problems with hanging.
  2. Remove all older versions of the software or firmware for third-party modems.
  3. Disconnect the Internet before starting firmware — during the firmware process, the connection will fail in any case.
  4. Download here the file necessary for firmware.

 Installing the software

  1. Find folder "Needle-FW-1.3" in the downloads.

  2. Сlick on the file "main" 
  3. Click on the "extract all" button.

  4. In the following window, select Computer → Local Drive (C:).
  5. Create a folder inside the disk with any convenient name for you. Click OK and wait for the files to be decompressed to the specified folder. In our case, the folder has the name "Needle13".

  6. Go to the folder you created, find the file
    Click on it — then enter the email you used to register on the
  7. Locate the file to run the firmware — main. You can also create a shortcut and drag it to your desktop.

Modem Firmware

If you are using a wire with a button:

  • plug the manufactured wire into the USB connector of the computer or laptop;
  • connect the modem — the modem indication will be red;
  • press the button on the wire to open the contact — the indication goes out;
  • insert the needle into the very corner, as in the picture below;
  • keep the needle at a small angle  this approach requires a skill that you will acquire after a couple of attempts;

  • then push the button on the wire — if the sound on the computer is turned on, you will hear a sound signal;
  • run the icon on the desktop — if you see the inscription "Download is over," then everything has been successful;
  • take the needle out of the modem, wait 3-4 minutes — after that you should see the following screens and text. If everything matches, then the firmware was successful.

If you are using a wire without an open button:

  • disconnect the USB wire from the computer;
  • insert the wire into the modem and touch the pin with a needle;
  • connect the USB wire back to the computer - at that moment you need to hold the needle in the modem;
  • follow the procedure in the previous list - you will use the wire disconnection and connection instead of the button.

What if the inscription "Port not found" appeared?
There may be several reasons:

  • you did not make contact with the needle;
  • the wire is faulty;
  • The computer slot was loose.

Try checking the equipment and getting in the right contact again.

What if the download has hung for one minute or longer?
Close the download window and try again. Most often, the modem can be sewn the first time, but sometimes 2-3 attempts are needed.

What other recommendations?
Do not touch the wires while loading the firmware. Because of this, contact can be lost, which often causes a malfunction.

Firmware was successful. What's next?
So the modem is ready for use. Insert a SIM card into it, plug in the power and start.

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