Hello GSM World!! Here we are going to give you Xiaomi QCN ( Qualcomm Calibration Network ) File, it will help you to repair unknown base band , IMEI, you can also backup your qcn file by QPST, for the repair we will use the QPST for Qualcomm Based Device it's a service grad factory software to fix many options on Qualcomm other than QPST we will need for repair IMEI Unknown Baseband,
QCN = Qualcomm Calibration Network
if phone efs erased, wiped, phone calibration erased and phone
not see network/not see 4g/3g/2g/lte then you should write qcn file
to solve those problem.
You can write QCN only if phone modem work'
you can remove the problem (emergency call only) with
Before going to start first note changing a working IMEI of your Phone is illegal.
Required Files:
Qpst
Imei Converter
Diag Driver
Ultra Edit
Note: Disable Driver signature environment.
Procedure:
Need Good qcn or backup qcn from working phone using qpst.
Dial *#*#717717#*#* to enable diag mode
Run Software download from qpst nd there press backup to get yur qcn backup, Also you can restore qcn by same procedure.
(Note: Some times qcn backup and restore can solve yur unknwn baseband imei issues.)
Imei Repair and Imei Change:
Required Root
Need qcn backup
Erase below givn partition from your phone
modemst1 modemst2 fsg
adb shell su -c dd if=/dev/zero of=/dev/block/sde28 adb shell su -c dd if=/dev/zero of=/dev/block/sdf3 adb shell su -c dd if=/dev/zero of=/dev/block/sdf5 adb reboot
Imporatant: Note you should know the imei of backup qcn otherwise it vil be little hard to find.
Now Open imei converter and there type your imei
For Example: Assume this as yur imei 879178954679871 329867843928232
Now Open imei converter and enter imei 1 by 1 to convert
After convert it vil be lik this 08 3A 55 68 87 59 64 47 45 , 08 3A 55 68 87 59 64 57 86
Open Qcn in Ultra edit, there use find option enter converted imei nd find the same line.
After find if you need to chnage yur imei from original change imei then convert using imei converter and replace it in the same line and save.
now restore qcn file using QPST
QCN = Qualcomm Calibration Network
if phone efs erased, wiped, phone calibration erased and phone
not see network/not see 4g/3g/2g/lte then you should write qcn file
to solve those problem.
You can write QCN only if phone modem work'
you can remove the problem (emergency call only) with
Before going to start first note changing a working IMEI of your Phone is illegal.
Required Files:
Qpst
Imei Converter
Diag Driver
Ultra Edit
Note: Disable Driver signature environment.
Procedure:
Need Good qcn or backup qcn from working phone using qpst.
Dial *#*#717717#*#* to enable diag mode
Run Software download from qpst nd there press backup to get yur qcn backup, Also you can restore qcn by same procedure.
(Note: Some times qcn backup and restore can solve yur unknwn baseband imei issues.)
Imei Repair and Imei Change:
Required Root
Need qcn backup
Erase below givn partition from your phone
modemst1 modemst2 fsg
adb shell su -c dd if=/dev/zero of=/dev/block/sde28 adb shell su -c dd if=/dev/zero of=/dev/block/sdf3 adb shell su -c dd if=/dev/zero of=/dev/block/sdf5 adb reboot
Imporatant: Note you should know the imei of backup qcn otherwise it vil be little hard to find.
Now Open imei converter and there type your imei
For Example: Assume this as yur imei 879178954679871 329867843928232
Now Open imei converter and enter imei 1 by 1 to convert
After convert it vil be lik this 08 3A 55 68 87 59 64 47 45 , 08 3A 55 68 87 59 64 57 86
Open Qcn in Ultra edit, there use find option enter converted imei nd find the same line.
After find if you need to chnage yur imei from original change imei then convert using imei converter and replace it in the same line and save.
now restore qcn file using QPST
Xiaomi QCN File
FILENAME / DESCRIPTION | DOWNLOAD | |
| REDMI NOTE 3 QUALCOMM SPECIAL EDITION (KATE) → | ||
REDMI NOTE 3 QUALCOMM (KENZO) → | ||
REDMI NOTE 4G DUALSIM GUCCI → | ||
REDMI NOTE 4G SINGLE SIM → | ||
REDMI 4A → | ||
REDMI 3S → | ||
REDMI 3 → | ||
MI MAX 32gb HYDROGEN → | ||
REDMI 2 PRIME LTE → | ||
MI NOTE (VIRGO) → | ||
REDMI 1S → | ||
REDMI 2 → | ||
MI 3W → | ||
MI 4W → | DOWNLOADDd | |
MI 4LTE → | ||
MI 4C → | ||
MI 4I → | ||
MI 4S → | ||
MI5 → | ||
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