: Common professional tools used with these zip files include DFT Pro , DTpro Tool , and UnlockTool to flash the security partitions back onto the Mediatek-based device.
Flashing NVDATA files involves deep-level system modification. Modifying or repairing IMEI numbers is . It is recommended to only use backups created from your own device whenever possible to avoid hardware ID mismatches. NV Data Corrupted Redmi Note 11s - Facebook
: Restores original IMEI numbers if they become "Null" or corrupted after a firmware flash.
: Resolves issues where the device repeatedly reboots into Recovery Mode with an "NV Data is Corrupted" message.
: Detailed instructions on how to use these backups are available via the Redmi Note 11S IMEI & NV Data Repair Guide on Scribd .
: For general user data (photos, contacts, apps) rather than system partitions, users should use Xiaomi Cloud or Google Backup . Warning on Usage
Technical guides for the Redmi Note 11S (code-named "fleur") recommend specific tools and files for restoration: