: When dialing *#06# shows "Null" or "Unknown," indicating the identity data is corrupted.
If you own a Tecno KG5k (Spark 7) and have recently flashed a new firmware, rooted the device, or performed a factory reset only to find your Wi-Fi turning off automatically or your SIM card showing "Invalid IMEI"—you have likely corrupted your . tecno kg5k nvram file
Quick restore workflow (high level)
Replacing an NVRAM file is a surgical procedure for your smartphone. Using a file from a different model (even another Spark 8 variant) can lead to permanent network locks or hardware conflicts. For those attempting a fix, experts typically use professional tools or the SP Flash Tool : When dialing *#06# shows "Null" or "Unknown,"
The "Tecno KG5k NVRAM File" is a critical repair component for fixing network null issues. Using a file from a different model (even
: Since the file from another phone contains that phone's IMEI, the technician must then carefully repair the original IMEI numbers back to the device to make it legal and functional again.