🔹 Is your phone in META Mode (not just powered on)? 👉 To enter META: Power off → Hold Vol Down → Insert USB cable → Release when tool detects.

The host tool successfully connected to the target’s download agent (DA) but failed to commit the IMEI value to the non-volatile storage region (typically NVRAM sector 0x05 for IMEI1).

Trying to restore IMEI on my [Phone Model] using Maui META but keep getting "Write IMEI to Target Failed" at 99%.

Here’s a comprehensive content piece tailored for different platforms (support article, error message explanation, forum post, or internal documentation) addressing the error. 1. Support Article / Knowledge Base Entry Title: How to Fix "Write IMEI to Target Failed" (Diagnostics & Solutions)

Do I need a patched DA file? Thanks.

🔹 Are you using Windows 10/11? 👉 Yes → Disable Driver Signature Enforcement and reinstall MTK/USB drivers. 👉 No → Skip to Step 2.

I see you're getting the "Write IMEI to Target Failed" error. Let’s fix this step-by-step:

(Comment replies would suggest: Check NVRAM partition size, disable antivirus, or use Modem META instead.) Error Code: WRITE_IMEI_TARGET_FAILED

This error typically occurs when using engineering tools (like Maui META, SPD Upgrade Tool, or QPST) to restore or repair a device's IMEI number. It indicates the software cannot write the new IMEI to the phone’s NVRAM (Non-Volatile Random Access Memory) or modem partition.

| Cause | Diagnostic | Solution | |-------|------------|----------| | | Read NVRAM first – if returns all zeros or 0xFF , sector is locked. | Send NVRAM_UNLOCK command via AT+EGMR=1,7,"" | | Checksum Error | Tool log shows CRC mismatch after write. | Recalculate checksum using target’s XOR routine. | | Secure Boot | Device shows BROM ERROR: S_BROM_CMD_STARTCMD_FAIL . | Use authenticated DA file from firmware bundle. | | Partial Write | IMEI appears written but reverts after reboot. | Unmount nvdata partition before write: umount /nvdata |