Run the WriteIMEI.exe file as an administrator.
If the COM Port field remains empty or throws a disconnection error, the Windows OS lacks signed driver verification. Reinstall the x64 or x86 SPD driver package and try changing the physical USB port or cable.
Provides immediate, clear visual feedback (green pass) upon successful writing. ⚠️ Legal and Technical Precautions write imei r1.5.6.1
| Symptom | Likely Fix | |---------|-------------| | IMEI reverts after reboot | NVRAM write-protected — root required, remount as RW | | Tool says “SEND FAIL” | Wrong USB driver; use legacy ADB or WinUSB | | Check digit invalid | Recalculate Luhn digit; phone rejects incorrect | | No network after write | Also restore baseband (NV items 1877, 441, 466) |
After a bad flash or format where the NVRAM data is wiped. Run the WriteIMEI
Manually type or paste your valid 15-digit code into the input field. Repeat for IMEI2 if working with a dual-SIM unit.
Before using this tool, you must ensure your system is prepared to communicate with the phone in "preloader" or "meta" mode. Provides immediate, clear visual feedback (green pass) upon
Right-click your Windows Start menu and open . Expand the Ports (COM & LPT) branch.
A functional computer running Windows (7/8/10/11).
A common area of confusion is that many IMEI writing tools exist for different purposes. The R1.5.6.1 tool is . It will not work on a device with a Qualcomm or MediaTek (MTK) processor. If you are dealing with a phone that has one of these chipsets, you need to use a different tool.