Fix: The modern Android security system (Secure Boot or write protection) is blocking the command. You may need to use a custom recovery (like TWRP) to clear or restore a clean QCN backup first.
Yes, but with caveats. For repairing legacy Qualcomm devices—such as the Xiaomi Mi5, OnePlus 3/3T, Samsung Galaxy S7 (Snapdragon variant), or LG G6— qualcomm-smartphone-write-imei-tool-v1.01.zip remains a lightweight, no-fuss solution. It does not require Java, Python, or complex dependencies. However, for any device running Android 10+ with a Snapdragon 730, 845, or newer, you will encounter security protections (SBL, XBL, or HLOS locks) that this tool cannot bypass.
Type or paste your device's original 15-digit IMEI number into the entry field. If the smartphone supports dual SIM cards, fill in the IMEI 2 field with the secondary configuration value. Double-check every digit to ensure complete accuracy. Step 5: Execute the Write Operation
Operates strictly via a software interface without requiring hardware dongles, boxes, or premium credits. Common Scenarios Demanding an IMEI Repair
If the codes do not work and your device is rooted, connect the phone to the PC, open a command prompt (CMD) via ADB, and execute the following commands: adb shell su setprop sys.usb.config diag,adb Use code with caution.
Install the official package to ensure your computer can establish an interface through a virtual COM port. Step 2: Enable Qualcomm Diagnostic Mode
In rare cases, a corrupted IMEI can cause the baseband processor to crash loop, preventing the phone from reading the SIM card.
: On many Qualcomm devices, this is done by dialing a secret code like *#*#717717#*#* or *#*#13491#*#* in the phone app.
If dialer codes are blocked by the OS, open a command line terminal inside your extracted SDK folder and type: adb shell su setprop sys.usb.config diag,adb Use code with caution. Step 3: Verify the Com Port Connection
Qualcomm Smartphone Write IMEI Tool v1.01 is a specialized utility used for repairing or restoring the International Mobile Equipment Identity (IMEI) number on mobile devices powered by Qualcomm chipsets. It is primarily used by technicians when a device's IMEI becomes "Invalid" or "Null" due to software corruption, firmware updates, or hardware repairs. Tool Overview
Modifying EFS or NVRAM partitions carries risks. It is standard practice for technicians to back up the existing QCN (Qualcomm Calibration Network) file using tools like QPST before attempting to write a new IMEI.
Unlike many professional repair tools, this utility can often be used without expensive hardware boxes or dongles.
Incorrect use can "brick" the device or permanently disable cellular connectivity. Root Access:
