WORLD FIRST Repair IMEI null oppo by sigmakey in english
 

Repair IMEI null all MTK Android devices

Temporary but great solution

The device only works when you unlock the bootloader


Sites that help you search for similar processors similar to Huawei


https://www.google.com/search?q=kimovil.com+Helio+


https://phonesdata.com/en/chipset/mediatek/










https://sigmakey.com/nfs/content/621...erspective.jpg




OPPO mt6765 processor repair example




1= read the full flash drive from a healthy phone, except for the data file



2= read Backup Calibration drive from a healthy phone


3= unlock the bootloader Damaged imei device


4= need to reflash the phone Then write a flash for it and then the bootloader unlock tool



5= Restore Calibration

6= Repair phone’s original IMEI





Backup Calibration

1. Connect SigmaBox / SigmaKey Dongle to PC USB port and launch SigmaKey Software
2. Select "MTK" platform from the tab menu in the upper left side of the software
3. Go to "Service" tab
4. Select "USB (autodetect)" in the serial ports selection tab
5. Select your phone model in the right drop-down menu (Huawei JAT-L29)
6. Press "Backup Calibration" button
7. Connect the phone according to software prompts:
   • FLASH MODE method: program will ask you to Hold both Vol- and Vol+, then plug the USB cable into the powered off phone
   • TESTPOINT method: program will ask you to short the testpoint on the powered off phone and connect USB cable
8. Install drivers for all devices that will appear in the system
9. Choose location to save calibration file (in *.skb format)
10. Message "Reading Flash is Done" indicates that Calibration backup procedure was completed successfully

Backup copies can be used by another SigmaKey/SigmaBox.

Restore Calibration

1. Connect SigmaBox / SigmaKey Dongle to PC USB port and launch SigmaKey Software
2. Select "MTK" platform from the tab menu in the upper left side of the software
3. Go to "Service" tab
4. Select "USB (autodetect)" in the serial ports selection tab
5. Select your phone model in the " (Huawei JAT-L29)" drop-down menu
6. Press "Restore Calibration" button
7. Connect the phone according to software prompts:
   • FLASH MODE method: program will ask you to Hold both Vol- and Vol+, then plug the USB cable into the powered off phone
   • TESTPOINT method: program will ask you to short the testpoint on the powered off phone and connect USB cable
8. Install drivers for all devices that will appear in the system
9. Select required calibration file (in *.skb format)
10. Message "Writing Flash is Done" indicates that Calibration restore procedure was completed successfully

Fix “Software IMEI: Not found” issues
In order to fix "Software IMEI: Not found" software issue in MTK smartphones xxxxx , please perform the following steps:

• Backup Calibrations from a working set and restore it into the corrupted one.
• Repair phone’s original IMEI.
  
  

https://img.gem-flash.com/images/524...3216894648.jpg

Any Success Report This is Very Helpful For Damage Oppo Realme Security

not working selecting other model will not accept preloader
and sigma cannot auto dump preloader and boot phone so no read calibration data

may be his model got preloader matched