Manually select the specific RDA model instead of using Auto-Detect. Corrupted NVRAM calibration database.
Easily repair both IMEI 1 and IMEI 2 for dual-SIM Coolsand phones.
The Coolsand RDA IMEI Repair Tool is a lightweight, specialized flashing and service software. It allows hardware technicians to communicate directly with the phone's non-volatile RAM (NVRAM) block where network configurations and hardware identifiers reside.
Check the box next to the active fields to confirm they are ready to write. Step 4: Connect the Phone in Boot Mode Power off the mobile device completely.
The is the latest, most reliable, and free solution for repairing, flashing, and writing IMEI numbers on RDA/Coolsand-powered feature phones. This guide provides a comprehensive overview of the new tool, its features, and a step-by-step tutorial on how to use it in 2026. What is the Coolsand/RDA IMEI Repair Tool? coolsand rda imei repair tool new
Quickly write valid IMEI numbers to the NVRAM (Non-Volatile RAM) of the phone.
The is a specialized Windows utility designed specifically to service devices powered by Coolsand and RDA Microelectronics chipsets. This guide provides a comprehensive overview of the tool, its core features, and a step-by-step walkthrough for repairing invalid IMEIs safely. What is the Coolsand RDA IMEI Repair Tool?
in many jurisdictions and is generally intended only for repairing a corrupted ("Invalid IMEI") original number. Improper use can lead to the device being blacklisted from networks. Always consult an official service center for permanent hardware or software issues. for these tools or a list of engineering codes for a particular keypad model?
If you were to use such a tool (again, not recommended without legal clarity), the general process described in forums looks like: Manually select the specific RDA model instead of
Kai took a breath. The old tools always failed at the "handshake" phase. But this... this was different. The tool didn't try to talk to the modem. It seemed to bypass it entirely, speaking directly to a dormant bootloader no one knew existed.
Use a shorter USB cable plugged directly into the computer's motherboard ports (rear ports on a desktop) rather than an external USB hub. Null/Invalid IMEI Persists After Flash
SCAN PORT. DEVICE FOUND: RDA8955. STATUS: IMEI CORRUPT.
If the progress bar does not move, clean the phone's charging port, swap your USB cable, or check Device Manager to verify the VCOM drivers are correctly assigned. The Coolsand RDA IMEI Repair Tool is a
The repair tool bypasses the phone's operating system by communicating through a hardware service interface. It allows a technician to rewrite the device's legitimate hardware identity directly back into the NVRAM parameters. Core Supported Chipsets and Architectures
General software failure, leading to a "No Service" status. How to Use the Coolsand RDA IMEI Repair Tool (New) Follow these steps carefully to repair your device. Prerequisites A Windows PC. RDA/Coolsand USB Drivers installed. The Coolsand IMEI Tool (new version).
Simultaneously updates or fixes both IMEI 1 and IMEI 2 slots found on budget multi-SIM feature phones.
Several updated tools are frequently used by technicians for these chipsets: Miracle Thunder (Crack/Box)
: Resolves signal dropping and "Emergency Calls Only" issues linked to corrupted IMEI data.
Insert a valid SIM card to test network registration and signal stability. Troubleshooting Common Errors