preventing the PC from recognizing the device's reboot command. Connection Instability:
If Odin gets stuck at a closing stage or fails immediately before, follow these standard recovery steps:
Paying attention to the log before the RQT_CLOSE message can give you vital clues:
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Disable default shutdown behavior on service calls:
Look at your phone's screen while in Download Mode. Locate the line that says or B: (numbers) . For example, B:4 means your device is on Binary 4.
To bypass this error completely, you must perform a clean, factory-grade flash using the full stock firmware archive. Firmware File Prefix preventing the PC from recognizing the device's reboot
[PC: Odin Tool] ---> Sending Image File ---> [Samsung Device: Download Mode] [PC: Odin Tool] <--- Sends "RQT_CLOSE" <--- [Device Security: Rejection Triggered] Primary Causes of the Error
If no active RQT session is found:
: In various contexts, Odin can refer to different things. In Norse mythology, Odin is the All-Father, a major deity. In technology or software development, Odin could refer to a tool, a project name, or a specific software component. For instance, Odin is known as a tool used for firmware flashing on Samsung devices. It could be related to "ODIN" (e
Ensure Samsung Smart Switch or older Kies software is completely shut down via Windows Task Manager. These programs run background processes that fight Odin for control over the device's USB connection.
Flashing a firmware package that does not match your precise device model number (e.g., trying to flash an SM-G973F firmware onto an SM-G973U) triggers an immediate security rejection by the bootloader. Step-by-Step Solutions to Fix "Odin RQT_CLOSE"
The term rqtclose stands for . In software engineering terms, this means the Windows operating system or an internal process loop within the Odin application forces the program to close instantly.
You are attempting to flash a firmware version that is incompatible with your specific model or region. How to Fix the RQT_CLOSE Error 1. Check Your Security Settings