Coolsand Rda Imei Repair Tool -

Not all phones work with this tool. The Coolsand RDA IMEI Repair Tool strictly supports:

| Chipset | Common Device Examples | | :--- | :--- | | RDA 8851 | Nokia 105 (clones), Micromax X082 | | RDA 8852 | Gfive U700, Lava A3 | | RDA 5867 | Alcatel OT-208, basic 2G phones | | RDA 6620 | Dual-SIM industrial trackers |

Important: This tool does NOT work on 4G smartphones, UNISOC SC series, or Qualcomm devices. Attempting to use it on unsupported hardware will fail or brick the device.

If you cannot get this legacy tool to work, consider these alternatives:

For most users, the free Coolsand tool remains the only viable low-cost option for feature phones. coolsand rda imei repair tool

Note: The interface may vary slightly depending on the specific version of the tool (e.g., RDA 885X Tool or Miracle Box plugin), but the general process remains consistent.

Step 1: Install Drivers Download and install the RDA/Coolsand USB Drivers on your computer. Restart the PC after installation to ensure drivers load correctly.

Step 2: Launch the Tool Open the Coolsand RDA IMEI Repair Tool as Administrator (Right-click > Run as Administrator) to avoid permission issues.

Step 3: Enter IMEI Details Locate the IMEI input fields. Enter IMEI 1 and IMEI 2 carefully. Double-check the digits for typos. Not all phones work with this tool

Step 4: Select Connection Type In the tool interface, select "USB" as the connection type. Ensure the baud rate is set correctly (usually auto-detectable).

Step 5: Connect the Phone

Disclaimer: Repairing or rewriting IMEI numbers is illegal in many jurisdictions if done to clone another device or obscure a device's identity. The following guide is provided for educational purposes only and for legitimate repair purposes (restoring a device to its original factory state) by qualified technicians. Ensure you have the original IMEI labels from the device box or battery compartment before proceeding.

Here is the catch. For many RDA chips (RDA8851, RDA8852, etc.), the IMEI repair tool won't work without a matching firmware (.PAC file) loaded into the tool's directory. If you cannot get this legacy tool to

Why? Because the IMEI offset address changes with every firmware version. The tool needs to read the scatter info from the PAC file to know where to write the IMEI. If you don't have the original firmware for your specific phone model, the repair will fail silently.

Most Coolsand/RDA chips enter Meta Mode (engineering/download mode) when connected to USB without being turned on.

In the world of mobile repairing, dealing with feature phones (button phones) is often just as complex as dealing with smartphones. One of the most common issues technicians face is the "Invalid IMEI" or "Null IMEI" error, which results in a total loss of network signal.

For devices running on Coolsand (RDA) chipsets, standard Android repair tools like SP Flash Tool or Odin do not work. This is where the Coolsand RDA IMEI Repair Tool becomes an essential asset for every mobile technician. This article explores what this tool is, why it is needed, and how to use it safely.

Feature phones lose their IMEI for several reasons:

When that happens, the phone sees the SIM card but refuses to register on the network. The Coolsand tool injects the original IMEI back into the NVRAM partition.