Do you have a (tr)uSDX with the bootloader installed that you want to program with the operational firmware (software)? Here is how you do it. All you need is a Windows driver, the programming software, the firmware you want to load and a micro-USB cable. Once everything is setup for programming, the install process only takes about 10 seconds. You'll be ready for POTA, SOTA and any other amateur radio HF field operating with the (tr)uSDX. My equipment playlist to help you turn the outdoors into your ham shack: https://www.youtube.com/playlist?list=PLyGtGdskTYCHgSw8P0nYVUFbvKYRWQq9G Links: (No affiliations.) • (tr)uSDX Web Page - https://dl2man.de • Official Firmware Release - https://dl2man.de/3b-trusdx-firmware/ • Beta Firmware Release - https://dl2man.de/wp-content/uploads/2022/01/wp.php/beta.html • AVRDUDESS Programming Software - https://blog.zakkemble.net/avrdudess-a-gui-for-avrdude/ • USB Driver - https://cdn.sparkfun.com/assets/learn_tutorials/8/4/4/CH341SER.EXE I purchased my working (tr)uSDX here: (No affiliation.) • newdiytech.com/ #(tr)uSDXprogramming #(tr)uSDXradio #(tr)uSDX