Qualcomm-smartphone-write-imei-tool-v1.01.zip [best] -

The Qualcomm Smartphone Write IMEI Tool v1.01.zip is a lightweight, specialized utility designed for restoring or repairing the International Mobile Equipment Identity (IMEI) number on devices powered by Qualcomm Snapdragon chipsets. This tool is primarily used by technicians to fix "Null IMEI" or "Invalid IMEI" issues that often occur after flashing a new ROM, factory resetting, or experiencing software corruption. Key Features of the Tool

Risk of Brick: Incorrect use of flashing or IMEI tools can permanently damage your device's cellular functions. qualcomm-smartphone-write-imei-tool-v1.01.zip

adb shell
su
setprop sys.usb.config diag,adb
  1. Qualcomm Powered Phone: Snapdragon 200 series up to Snapdragon 855 (later chipsets like 865/888 may require newer tools).
  2. Windows PC (7/8/10/11) with administrative privileges.
  3. Qualcomm Diagnostic Drivers properly installed (not just MTP or ADB).
  4. USB Debugging enabled on the phone (for ADB commands to switch to DIAG mode if needed).
  5. Original IMEI number(s) — printed on the device box, beneath the battery, or dial *#06# before corruption (if still visible).
  6. Backup of current NV data — many tools do not auto-backup; you should use QPST or similar first.