The software validation system detects an invalid character or non-standard IMEI format structure.
: Writing incorrect parameters to the EFS partition can permanently damage the phone’s radio frequency (RF) chips or completely destroy network functionality. Always attempt to back up your existing EFS partition via TWRP recovery or an ADB backup before running hardware partition tools.
The Qualcomm Smartphone IMEI Tool v1.01 is a software utility designed to modify or repair the IMEI (International Mobile Equipment Identity) number on Qualcomm-based smartphones. The IMEI is a unique identifier assigned to each mobile device, and it plays a crucial role in identifying and authenticating devices on mobile networks.
: It allows users to write unique identification numbers for both SIM slots independently, which is essential for modern dual-SIM smartphones. qualcomm-smartphone-write-imei-tool-v1.01.zip
: Writes IMEI data directly to the device's non-volatile memory via Qualcomm Diagnostic (Diag) Mode.
When flashing custom ROMs, tweaking firmware, or recovering from a severe system crash, the device's Non-Volatile (NV) RAM can become corrupted. This corruption often wipes out the IMEI configuration, resulting in an "Invalid IMEI," "Null IMEI," or "Unknown Baseband" error. Without a valid IMEI, the smartphone or 4G LTE modem cannot register on cellular networks, leaving the user with for calls, texts, or mobile data.
Download and extract it using WinRAR or 7-Zip. The software validation system detects an invalid character
Right-click the .exe application file and select . Step 3: Configure and Write the IMEI
Right-click on your Windows Start menu and open . Expand the Ports (COM & LPT) tree. You should see an active listing titled Qualcomm HS-USB Diagnostics [COMXX] (where XX is a specific port number). Note down this port number. Step 3: Run the Qualcomm Write IMEI Tool
On your smartphone, enable "USB Debugging" in Developer Options. Use a specific dialer code (like *#*#717717#*#* or *#*#13491#*#* ) or an ADB command ( adb shell setprop sys.usb.config diag,adb ) to enter Diagnostic (Diag) Mode. The Qualcomm Smartphone IMEI Tool v1
For the tool to function, the target smartphone must be placed in . This is often achieved through a specific dialer code, such as *#*#717717#*#* on many Xiaomi/Qualcomm devices. Once in Diag Mode, the computer recognizes the device as a COM port, enabling the tool to communicate with the hardware's modem partitions. The process generally involves:
Reboot your smartphone normally. Dial *#06# on your dial pad to verify that the network configurations have been successfully restored. Common Troubleshooting Scenarios Root Cause Faulty driver or incorrect phone state.
Writing incorrect data directly into the Qualcomm NV RAM partitions can permanently damage the phone's modem. If the operation fails or is interrupted, the smartphone may permanently lose cellular network signals, Wi-Fi connectivity, and Bluetooth functions. Always take a full backup of the device’s QCN partition via tools like QFIL or QPST before implementing changes.
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