Follow the prompts to download the historical firmware library directly into the modern interface. Legacy vs. Modern: Key Differences
While new XCTU versions focus on the latest XBee3 protocols, legacy X-CTU (5.2.8.10 and older) is sometimes preferred for simple serial firmware updates on older Series 1 or Series 2 hardware. Where to Download XCTU Legacy download xctu legacy
The final "old-gen" version, compatible with Windows XP through Windows 7. Follow the prompts to download the historical firmware
