Copy the extracted toolchain folder and paste it into the directory where you installed the RT809H software (typically on a deep partition like D:\RT809H ).
: Ensure ToolChain RT809H ENG.part1.rar , part2.rar , and part3.rar are in the same folder. Download Tool Chain RT809H English part3 rar
Because the full RT809H toolchain package is large (approximately 301 MB), it is often distributed as a multi-part RAR archive to ensure stable downloads. You must download all three parts——to extract the software correctly. Where to Download Copy the extracted toolchain folder and paste it
: Plug in your RT809H programmer via USB only after the software installation is complete to avoid driver errors. You must download all three parts——to extract the
: The developer often hosts the latest English versions (e.g., RT809H 20181116 ENG.rar ) and toolchain parts on the iFix Official Thread.
: Right-click the first part and select "Extract Here." This will automatically pull the data from all three parts to create the full toolchain folder. Merge with Main Software : Install the main RT809H programmer software first.