https://imrannazar.com/articles/an-xmodem-tale
A Tale of XMODEM - Imran Nazar
Learning of the passing of Ward Christensen who created the BBS and XMODEM, I decided was as good a time as any to relate the tale of the time I used XMODEM as...
a tale of xmodemimrannazar
https://kb.naturalnetworks.com/article.php?id=375
How to upload IOS via XModem on a Cisco Switch
How to upload IOS via XModem on a Cisco Switch
how to uploadiosviaxmodemcisco
https://www.dlink.com/al/sq/support/faq/switches/layer-2-gigabit/dws-series/dws-4026-how-to-upgrade-firmware-xmodem
DWS 4026 How to Upgrade Firmware XMODEM | D-Link
how to upgradedwsfirmwarexmodem