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<div class="moz-cite-prefix">Hi,<br>
<br>
The actual file you're referencing may be able to be extracted
using 7Zip, since it's a self-extracting archive. However, that
won't get you very far, as the programs contained within are also
16-bit, and designed to run under DOS. You need to understand, at
the time these files were released, Windows 9X at the very latest
was the most modern consumer operating system available, and that
ran on top of DOS. Also, probably many computers with DECtalk
Express units didn't have Windows installed at all, and ran pure
DOS, with DOS applications exclusively. Therefore, it was taken
for granted that any PC user with a DECtalk Express would have no
problem running DOS applications. As far as I know, there has
never been any Windows software which can upgrade or downgrade
DECtalk Express firmware, it has to be done from DOS.<br>
<br>
While you may be able to get a virtual machine going, whether it
can access a USB serial port is beyond me. What I'd do in your
situation is to find a 16-bit DOS or 32-bit Windows machine and
upgrade the firmware from there. If you're using a DOS prompt from
within Windows, you need to make sure nothing else is trying to
access the serial port while the firmware upgrade is happening. To
be really safe, use Windows 95 or 98, which allow you to exit
Windows completely and drop to a true DOS prompt with no Windows
running at all.<br>
<br>
Hope this helps,<br>
<br>
Jayson<br>
<br>
On 7/19/2018 5:45 AM, Aksel Leo Christoffersen wrote:<br>
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cite="mid:001101d41f45$4b5875c0$e2096140$@blindsigtmail.dk">
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<p class="MsoNormal">Hi,</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"><span lang="EN-US">I’m thinking of buying a
Dectalk Express unit, but I want a unit running the Dectalk
version 4.2 firmware.</span></p>
<p class="MsoNormal"><span lang="EN-US">So, I’m connected to the
Dectalk Archive BTSync folder, and in the hardware folder, I
found a file called dtxv42.exe, which I guess mean Dectalk
Express version 4.2 CD. However, when I try to open the
file, I get a compatibility error.</span></p>
<p class="MsoNormal"><span lang="EN-US">So if I accidently buy a
Dectalk Express unit with a version higher than 4.2, can I
then use the dtxv42cd.exe to downgrade it, and how can I use
the file, when Windows can’t open it?</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks in advance.</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">Best regards:</span></p>
<p class="MsoNormal"><span lang="EN-US">Aksel Christoffersen</span></p>
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<br>
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</pre>
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