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-rw-r--r--upgrade/readme.txt4
1 files changed, 3 insertions, 1 deletions
diff --git a/upgrade/readme.txt b/upgrade/readme.txt
index 855194c..49098ba 100644
--- a/upgrade/readme.txt
+++ b/upgrade/readme.txt
@@ -9,7 +9,9 @@ The program then emits a beep if a piezo speaker is connected between PB0 and PB
Creating an Upgrader
====================
- ruby generate-data my_bootloader.hex
+ ruby generate-data.rb my_bootloader.hex
make clean; make
Next upload the 'upgrade.hex' file generated, via whichever bootloader you're using. If you're using micronucleus and have the command line tool installed: micronucleus --run upgrade.hex
+
+The ruby script requires ruby 1.9 be installed. On Mac OS this is best achieved via Mac Homebrew. The 1.8 version included wont do.