<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">Dan,<div>Good afternoon. I uploaded firmware on my tru(SDX) \u02dc2 years ago and made this video. In the AVRDUDESS v 2.14 program I called up the Arduino under \u201cProgrammer" and ATMEGA328P for "MCU". That specific part of the procedure is located at the 5:20 minute mark of the video.</div><div><br></div><div>Note that I didn\u2019t use a physical Arduino board, just called it up virtually in the SW.</div><div><br></div><div>Hopefully that helps you.</div><div><br></div><div>73,</div><div>Stephen (W2WF)</div><div><br></div><div><br></div><div><div style="display: block;"><div style="-webkit-user-select: all; -webkit-user-drag: element; display: inline-block;" class="apple-rich-link" draggable="true" role="link" data-url="https://youtu.be/zh0Q-3N1ZaE"><a style="border-radius:10px;font-family:-apple-system, Helvetica, Arial, sans-serif;display:block;-webkit-user-select:none;width:300px;user-select:none;-webkit-user-modify:read-only;user-modify:read-only;overflow:hidden;text-decoration:none;" class="lp-rich-link" rel="nofollow" href="https://youtu.be/zh0Q-3N1ZaE" dir="ltr" role="button" draggable="false" width="300"><table style="table-layout:fixed;border-collapse:collapse;width:300px;background-color:#C3B9AA;font-family:-apple-system, Helvetica, Arial, sans-serif;" class="lp-rich-link-emailBaseTable" cellpadding="0" cellspacing="0" border="0" width="300"><tbody><tr><td vertical-align="center" align="center"><img style="width:300px;filter:brightness(0.97);height:168px;" width="300" height="168" draggable="false" class="lp-rich-link-mediaImage" alt="maxresdefault.jpg" src="cid:D40BB69C-FD1A-478C-B92B-37C1B34B9417"></td></tr><tr><td vertical-align="center"><table bgcolor="#C3B9AA" cellpadding="0" cellspacing="0" width="300" style="table-layout:fixed;font-family:-apple-system, Helvetica, Arial, sans-serif;background-color:rgba(195, 185, 170, 1);-apple-color-filter:initial;" class="lp-rich-link-captionBar"><tbody><tr><td style="padding:8px 0px 8px 0px;" class="lp-rich-link-captionBar-textStackItem"><div style="max-width:100%;margin:0px 16px 0px 16px;overflow:hidden;" class="lp-rich-link-captionBar-textStack"><div style="word-wrap:break-word;font-weight:500;font-size:12px;overflow:hidden;text-overflow:ellipsis;text-align:left;" class="lp-rich-link-captionBar-textStack-topCaption-leading"><a rel="nofollow" href="https://youtu.be/zh0Q-3N1ZaE" style="text-decoration: none" draggable="false"><font color="#FFFFFF" style="color: rgba(255, 255, 255, 0.847059);">(tr)uSDX First Impressions & Callsign Programming</font></a></div><div style="word-wrap:break-word;font-weight:400;font-size:11px;overflow:hidden;text-overflow:ellipsis;text-align:left;" class="lp-rich-link-captionBar-textStack-bottomCaption-leading"><a rel="nofollow" href="https://youtu.be/zh0Q-3N1ZaE" style="text-decoration: none" draggable="false"><font color="#FFFFFF" style="color: rgba(255, 255, 255, 0.54902);">youtu.be</font></a></div></div></td></tr></tbody></table></td></tr></tbody></table></a></div></div><br id="lineBreakAtBeginningOfMessage"><div><br><blockquote type="cite"><div>On Oct 21, 2025, at 12:35\u202fPM, Daniel Poirot via BVARC <bvarc@bvarc.org> wrote:</div><br class="Apple-interchange-newline"><div>I have a uSDX+ 8 band qrp box. It\u2019s a tiny SDR unit with lots and lots of cousins on AliExpress, eBay, and Amazon. <div dir="auto"><br></div><div dir="auto">Mine keeps popping up on 6m, even though it doesn\u2019t have a 6m filter\u2026</div><div dir="auto"><br></div><div dir="auto">I am itching to update the firmware. </div><div dir="auto"><br></div><div dir="auto">Has anyone programmed a (tr)uSDX or the like?</div><div dir="auto"><br></div><div dir="auto">73</div><div dir="auto">Dan KJ5IZK</div><div dir="auto"><br></div>
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