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--- public:calculator:info:lf15c [31/01/26 09:43 GMT] – [Complex Numbers] john
+++ public:calculator:info:lf15c [03/02/26 13:34 GMT] (current) – [DM15L running V33 or later (Linux)] john
@@ Line 29: / Line 29: @@
 ==== DM15L running V32 or earlier (Linux) ====
-  * ''sudo lpc21isp <FIRMWARE FILE NAME> /dev/ttyUSB0 115200 1200''
+  * ''sudo lpc21isp LF15C_250408.hex /dev/ttyUSB0 115200 1200''
   * Press hidden ''reset'' button
     * firmware is flashed
@@ Line 36: / Line 36: @@
 ==== DM15L running V33 or later (Linux) ====
+<note>
+This behaviour isn't consistent!
+I've seen it be possible to flash and run LF15C directly after DM15 V34 with no problems.
+I've also seen the problems described below, requiring downgrade to V32.
+Just bear it in mind if you have problems starting LF15C after flashing it on top of V33-onwards
+</note>
 The new Swiss Micros firmware V33 changes the behaviour of the bootloader, and it appears to be impossible to flash 3rd party firmware when the calculator is running V33 or later.
@@ Line 48: / Line 58: @@
     * firmware is flashed
   * press hidden ''reset'' button to start V32 firmware
-  * ''sudo lpc21isp <LF15C FIRMWARE> /dev/ttyUSB0 115200 1200''
+  * ''sudo lpc21isp LF15C_250408.hex /dev/ttyUSB0 115200 1200''
   * press hidden ''reset'' button
     * firmware is flashed
@@ Line 580: / Line 590: @@
   *  There are 10 user flags, from 0 to 9.
-    * There are no LCD annunciators to show state, but can be set, cleared and tested for decision making in program branching
+    * There are no LCD annunciators to show state, but flags can be set, cleared and tested for decision making in program branching
   *  Long press <key>GTO</key> in program mode to access ''go to label'' feature (single press in run mode)

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