You should search for an NVRAM file if you experience any of the following on your Huawei MYA-L22:
If you previously backed up your device using SP Flash Tool or a custom recovery, you can simply flash your original NVRAM/NVDATA image back to the device to restore your unique IMEI. 2. Using Stock Firmware mya-l22 nvram file
No. If you did not backup your NVRAM, you cannot restore the original factory IMEI numbers. You can only write new, valid IMEI numbers based on your phone’s original packaging or purchase receipt. Using random IMEI numbers is illegal in many jurisdictions. You should search for an NVRAM file if