Dial *#*#3646633#*#* . Navigate to Connectivity → Wi-Fi. If MAC is all zeros → confirm NVRAM fault.
Below is a following the format of a short engineering case study. You can adapt the bracketed sections to your exact data. A Technical Analysis of NVRAM/NVDATA Corruption in Xiaomi Redmi 13 (“Tides Moon”): Causes, Diagnostics, and Restoration Abstract The Xiaomi Redmi 13 (codenamed “tides” or “moon” in different firmware branches) utilizes a dedicated NVDATA partition and an NVRAM region within the nvdata volume to store device-specific calibrations, IMEI numbers, MAC addresses, and Bluetooth identifiers. Corruption of these partitions—often after flash operations using SP Flash Tool, unauthorized unlock procedures, or failed OTA updates—results in connectivity failures (Wi-Fi/BT not turning on), null IMEI ( *#06# ), and baseband version showing “Unknown.” This paper documents the structure of NVDATA/NVRAM on the Redmi 13, identifies failure modes, and provides a step-by-step recovery methodology using backup-restore, hex editing, and Meta Mode tools. Xiaomi Redmi 13 -tides-moon- nvdata nvram fil...
Go to Settings → About → Status. If MAC shows “02:00:00:00:00:00” or “Unavailable” → NVRAM corruption. Dial *#*#3646633#*#*
Settings → About → Baseband. “Unknown” → both NVRAM and modem configuration may be damaged. 5. Restoration Methodology 5.1 Using Backup (Ideal Case) If a full nvdata.bin and nvram.bin backup exists (e.g., via SP Flash Tool Readback or dd from rooted device): Below is a following the format of a
Based on common technical issues with Xiaomi/Redmi devices (especially MediaTek chipsets), you are likely referring to (e.g., “Wi-Fi MAC address,” “Bluetooth address,” “invalid IMEI”), possibly related to a custom ROM, SP Flash Tool, or a repair scenario involving a file named something like tides_moon_nvdata.bin .
| Partition | Block device | Size | Contents | |------------|-------------------------------|---------|------------------------------| | nvdata | /dev/block/mmcblk0pXX | 32 MB | IMEI, RF calibration, BT MAC | | nvram | /dev/block/mmcblk0pYY | 5 MB | Wi-Fi MAC, device ID | | protect1 | /dev/block/mmcblk0pZZ | 8 MB | Redundant NVRAM | : Without a backup of nvdata and nvram taken while the device was fully functional, permanent repair may require vendor flash files (e.g., tides_moon_nvdata.bin from authorized service center dumps). 3. Failure Scenarios 3.1 Format All + Download (SP Flash Tool) Using SP Flash Tool with “Format All” option erases NVDATA/NVRAM entirely. Result: No IMEI, no baseband, no Wi-Fi/BT. 3.2 Flashing Incompatible Firmware Flashing Redmi 13 “tides” firmware onto a “moon” variant (or vice versa) corrupts NVRAM structure due to different calibration block offsets. 3.3 Manual Root/Unlock Modifications Editing /nvdata or /nvram without proper dismount or with incorrect permissions triggers checksum failures, causing the system to revert to default (null) values. 4. Diagnostic Procedures Test 1 – IMEI Check Dial *#06# . If “IMEI (null)” or “IMEI 0” appears → NVDATA corruption.