Installation Help

[DemonFace]

Hi! I want to install a xiaomi.eu ROM, but I don't really understand what should I do.
I know how to use the Fastboot option and the XiaoMiFlash. My phone is unlocked, I don't really understand what this TWRP is.
Can someone explain this steps under the ROMs for devices with locked bootloader, please? Especially the "Install TWRP via Fastboot mode, then install our ROM" thing. "Install TWRP via Fastboot mode, then install our ROM" is done.

Thanks in advance for your helps!

 

[DemonFace]

Update:

I tried to use the XiaoMiTool, but it won't boot if I install it with the XiaoMiTool. I waited 20+ minutes. Had to reinstall the china stable from xiaomi.com website with the flashing tool.
Tried it two times. Here is what I did:

• Plugging USB, allowing debuging mode, etc. everything it has asked for.
• Selecting the device
• Selecting "Show advanced options"
  
  
  
• Selecting "Other (recovery file)"
  
  
  
• Selecting the zip file (xiaomi.eu_multi_HMPro_V9.2.1.0.MHQCNEK_v9-6.0.zip in my case)
  
  
  
• Adding twrp.img (TWRP recovery)
  
• Installation process is finished and it was a success!
• Rebooting from the TWRP screen.
• Waiting...
• Nothing.

Should I select TWRP (8) instead of Other (7)?

 

[DemonFace]

Update 2:

Solved. I managed to install it by putting the installer on the SD card and installing the ROM from there.