Failed to open "COM30"!!! Port busy

Question

Hi, can you someone help me please..

I need connect mediatek phone in bootrom mode, but COMPORT always disconnect after one second with some error, mostly Failed to open "COM30"!!! Port busy...

Of course I tried another USB port, another cable and also another phone with mediatek processor. I tried change port number in device manager, but nothing helped.

I dont really know how it works, but if I am trying to connect it right after restart, how may be port busy? I hope it have some easy solution..

On another PC its working well..same phone, same cable, same program (unlocktool). Im sure this is problem in my computer, not in program config.

Many thanks!

Answer 1

Hello

It seems like you’re having trouble connecting your MediaTek phone in bootrom mode due to a “COM30 Port busy” error. This issue could be due to a variety of reasons:

Port Conflict: Windows may attempt to assign new devices to COM ports already being used. This can cause a conflict resulting in the “Port busy” error.

Driver Issue: There might be an issue with the device driver for your MediaTek phone. Ensure that you have the latest drivers installed.

Software Conflict: If you have any other software running that might be using the COM port, it could cause this error. Make sure no other software is using the COM port when you’re trying to connect your phone.

Here are some steps you can try to resolve this issue:

Restart Your Computer: Sometimes, a simple restart can free up the COM port if it’s being held by a system process or another application.

Check for Conflicting Software: Ensure that no other software is running that might be using the COM port.

Update or Reinstall Device Drivers: Make sure you have the latest drivers for your MediaTek phone installed. If the drivers are already up-to-date, try uninstalling and reinstalling them.

Try a Different Computer: As you mentioned that it works on another PC, there might be a specific issue with your computer. If possible, try to identify any differences in the configuration between the two computers.