diff --git a/devel/-B-full.bin b/devel/-B-full.bin
new file mode 100644
index 0000000..804c2e6
Binary files /dev/null and b/devel/-B-full.bin differ
diff --git a/download.html b/download.html
index 61882fa..be10c86 100644
--- a/download.html
+++ b/download.html
@@ -20,6 +20,8 @@
 <li><a href="master/update.ino.bin">update.ino.bin</a> (Oct 16 21:22:14 2019)</li>
 
 </ul><h2>Development repository</h2><ul>
+<li><a href="devel/-B-full.bin">-B-full.bin</a> (Nov 2 21:48:59 2019)</li>
+
 <li><a href="devel/devel20190602-full.bin">devel20190602-full.bin</a> (Jun 2 20:28:00 2019)</li>
 
 <li><a href="devel/devel20190608-full.bin">devel20190608-full.bin</a> (Jun 8 13:52:31 2019)</li>
@@ -62,4 +64,10 @@
 
 <li><a href="devel/update.ino.bin">update.ino.bin</a> (Nov 2 18:07:17 2019)</li>
 
-</ul></section></body></html>
+</ul></section>
+  <br>
+  <p>Last two letters of version number indicate SPIFFS file system version. If the first (upper-case)
+   letter has changed, then this version is incompabible with prevision versions and you have to flash
+   the full image. If the second (lower-case) letter has changed, then this version has some changes
+   (e.g. internal web page layout, LCD/TFT display layout) in the file system which you will not get with
+   a code-only (OTA or flashing update.bin) update, but it should not break anything.</p></body></html>