Without disconnecting the phone, load your official "earth" factory scatter firmware and flash the full operating system.
Perform a factory reset via stock recovery immediately after flashing to force sync the changes. Phase 3: Repairing Missing Network Signaling (IMEI Fix)
Use a tool like , DFT Pro , or Hydra Tool to erase the nvram and nvdata partitions .
You can use open-source utilities like MTKClient on GitHub or professional-tier service tools such as Hydra Tool , DFT Pro , or Pandora Box . Poco c55 or Redmi-12c-earth- NvData NvRam File ...
Here are the primary methods that have been successful for users in restoring NV data and fixing the "corrupted" error.
When this data is corrupted, your device cannot authenticate with mobile networks, resulting in an "unknown baseband" or "invalid IMEI" scenario, often triggered by a crash on the logo saying "NVData is corrupted" or "The system has been destroyed". Causes of NVData/NVRAM Corruption on Earth Devices
During boot-up, the system runs a cryptographic security handshake between the NvRam and NvData partitions. If the security keys do not match, or if either partition is altered, the device blocks the boot cycle and displays an error message. This corruption is typically caused by: Interrupted or incorrect official firmware flashing. Downgrading Android/MIUI/HyperOS versions improperly. Without disconnecting the phone, load your official "earth"
: NvRam (Non-volatile RAM) is a type of memory that retains its data even when the power is turned off. In smartphones, NvRam is used for storing critical information that the device needs to function properly, such as calibration data for sensors or specific hardware configurations.
(codenamed ) share identical hardware, and issues with typically result in critical errors like "NV Data is corrupted," bootloops, or lost IMEI/network signals
: Use the Mi Flash Tool to perform a "Clean All" flash. This may resolve minor software conflicts. 2. Advanced Repair with Professional Tools You can use open-source utilities like MTKClient on
Battery die-off or cable disconnection during flashing with SP Flash Tool.
Corruption doesn't happen out of the blue. For the Poco C55 and Redmi 12C, which share the MediaTek platform, corruption typically occurs due to: