NVRAM, or Non-Volatile RAM, is a type of memory that retains its data even when the device is powered off. In smartphones, NVRAM is crucial for storing configuration data, calibration parameters, and sometimes IMEI (International Mobile Equipment Identity) numbers. Issues with NVRAM can lead to problems with device functionality, including connectivity issues, loss of IMEI, and more.
On recent MIUI/HyperOS builds, the nvdata partition may be write-protected. Use SP Flash Tool instead.
Install the latest MediaTek (MTK) USB VCOM Drivers on your computer.
If you own a Xiaomi Redmi 13C or POCO C65 (codenamed ) and are facing issues like "Null IMEI," "Baseband Unknown," or "No Signal" after flashing, updating, or repairing the phone, you are likely facing a corrupted NVRAM or NVDATA partition. This issue commonly happens during software troubleshooting or downgrades.
: Typically occurs after a failed flash or software glitch.
Following this protocol carefully will correct critical calibration partition corruption and safely restore your device to regular operating parameters. NVRAM, or Non-Volatile RAM, is a type of
Sometimes, a simple software glitch can cause network issues. The first step in any troubleshooting process should be to flash a fresh stock ROM via Fastboot. This method is relatively safe and has a chance of restoring NVRAM/NVDATA functionality.
Flashing system partitions carries inherent risks. Ensure you satisfy the following requirements before proceeding:
