Write Imei R1.5.6.1 ((exclusive)) < 2024-2026 >

Based on the context of IMEI analysis and the standard GSMA specifications, the string 1.5.6.1 most likely refers to Section 1.5.6.1 of the IMEI Allocation and Approval Guidelines (version 15 or later).

Usually, "Normal Mode" or "Calibration Mode" is selected depending on the device state. Enter IMEI: Input the 15-digit into the provided fields. write imei r1.5.6.1

• Check "Dual IMEI" if applicable.
• Type IMEI 1 and IMEI 2 exactly as on the label.
• Do NOT include dashes or spaces.

Optimized for Spreadtrum-based smartphones and feature phones (e.g., those with SC6531 or similar chipsets). Prerequisites for Use Based on the context of IMEI analysis and

Process: Users select the correct COM port, choose the "Mode Select" (often "Normal" or "Calibration"), enter the original IMEI numbers, and click Write. Critical Legal & Safety Warning Check "Dual IMEI" if applicable

Risk: Writing to NVRAM is sensitive; incorrect settings can lead to "Baseband Unknown" errors or a permanent loss of network signal.

The tool is a lightweight Windows-based application used by technicians to flash IMEI data into a device's NVRAM.