Use an original Samsung USB cable and avoid using USB hubs. Plugging directly into a rear motherboard port on a PC often provides a more stable connection.
When flashing files via Odin, the tool sends packages to the device's Download Mode interface. If the device detects a security violation, a storage mismatch, or corrupted data headers, it stops the process. It sends an RQT_CLOSE signal back to the PC to force the tool to close the transmission pipeline.
Windows restrictions can block Odin from executing specific write commands to the USB port. Right-click the Odin3.exe file and select . This grants the software full system access, preventing third-party background processes from closing the flashing thread. 5. Disable Antivirus and Firewall Shielding odin rqtclose
Always right-click the Odin executable file and select .
Odin cannot directly flash raw .img files. If a user loads an uncompressed recovery file into the instead of an archived .tar or .tar.md5 package, the tool fails. The device fails to read the raw partition block map, prompting an immediate request to close the link. 3. Version Incompatibility Use an original Samsung USB cable and avoid using USB hubs
Incomplete downloads or corrupted .tar.md5 archives cause the software to reject the package mid-transfer.
If you are getting the RQT_CLOSE error while trying to update your phone or fix a boot loop, your current system data partition might be conflicting with the firmware update. If the device detects a security violation, a
If no active RQT session is found:
If odin rqtclose does not exist or fails: