Hi
siddheshcronaldo7Thank you for your asking. I edited your passage. Please be aware that sharing the personal information like SN or IMEI on the Internet is quite dangerous.
For your situation, kindly refer to the reply as below
(1) IMEI NULL & Wifi GPS Baseband Unknown
Do you insist to restore QCN? Does the issue appear right after any system/apps' download or update? Have you tried any troubleshooting?
(2) Unlocking Bootloader
Please note that once you unlock your device, it will no longer be regarded as Original Product, indicating out of warranty product. If you still want to unlock you device, please upgrade your firmware version to Android 9.