Step 1: Put device into Diag mode
Step 2: Verify Diag port
Step 3: Open UMT → SPD Module → IMEI Repair tab
Step 4: Select COM port (from drop-down)
Step 5: Click "Read IMEI" – confirms connection spd imei repair umt tool
Step 6: Enter New IMEI (15 digits, last digit checksum auto-corrected)
Step 7: Click "Write IMEI"
Step 8: Reboot device – check *#06#
| Problem | Cause | UMT Solution | |--------|-------|---------------| | “BROM error: DA not sent” | Driver conflict | Reinstall SPD USB drivers; use different USB 2.0 port | | IMEI resets after flash | Wrote only to nvdata, not ProdNV | Use “Write IMEI (Deep)” mode in UMT | | “Security mode enabled” | New Unisoc auth | Need to purchase UMT SPD auth credits (extra $) | | IMEI shown but no signal | RF calibration lost | Flash QCN or restore full nv backup (do before repair) | Step 1: Put device into Diag mode
SPD phones use SPD-SCI (Spreadtrum Communication Interface) drivers. UMT comes with a driver pack, but here is the manual process:
Spreadtrum chipsets store IMEI information in the NV (Non-Volatile) memory (usually prod_nv partition). If this data gets corrupted due to a wrong flash, a virus, or a software glitch, the phone refuses to register on the network.
Pros:
Cons:
The Dashboard: The interface is functional rather than flashy. It is tabbed and organized logically. For IMEI repair, users navigate to the "IMEI" or "NVRAM" tab. The input fields are large and clear, requiring the user to simply type in the numbers and click "Write."
The Process:
The log window provides real-time feedback. It tells you exactly what the device is doing (e.g., "Sending Loader," "Formatting NVRAM," "Write Done"). This transparency is crucial for troubleshooting connection issues.
The Ultimate Multi Tool (UMT) is widely regarded as one of the most robust and reliable software boxes in the mobile repair industry. Specifically, its SPD Module is a go-to solution for technicians dealing with devices powered by Spreadtrum (now Unisoc) chipsets. When it comes to IMEI repair, UMT offers a balance of automation and safety that few other tools match, though it requires hardware procurement to function. Step 2: Verify Diag port
Rating: 4.2 / 5
(Subtractions for driver headaches, dongle requirement, and slow updates for latest 5G Unisoc chips)