Download Poco F4 tested ENG QCN File

QCN is file format contain Network related data of a device Including IMEI Number, BT address, Mac address, Serial Number etc.

IMEI Number or International Mobile Equipment Identity is a Number to identify a Mobile Phone. all GSM network use IMEI Number to validate the device. if you have Loss IMEI Number on Your Poco F4 due to any software issue then You can Repair it by following the below Instructions.


  1. QPST Here
  2. QCN Rebuilder
  3. Poco F4 QCN: Download
  4. Modemst1,Modemst2,fsc & fsg (Contact me)

Steps to Repair IMEI Number on Poco F4:

Experimental method=

  • Flash engineering ROM
  • download require files from above
  • Run QCN Rebuilder and select downloaded QCN file
  • & rebuild qcn

  • Now Enable usb debugging and connect Phone to PC
  • Send the below code via CMD

Reset EFS Partition:

adb reboot bootloader
fastboot erase modemst1
fastboot erase modemst2
fastboot erase fsg
fastboot erase fsc
  • flash modemst1 modemst2 fsg & fsc (available in firmware or use readback) via fastboot
fastboot flash modemst1 modemst1.img
fastboot flash modemst2 modemst2.img
fastboot flash fsg fsg.img
fastboot flash fsc fsc.img
  • Enable Diag Port:
adb shell
setprop sys.usb.config rndis,diag,adb
  • Run QPST/QFIL. Go to restore tab and select the Rebuilded QCN file & click restore
  • done

Method 2:

  • use with supported box or dongle