Using the Twiddler 4
Using the Twiddler 3
Twiddler Tuner
Typing Tutor
Twiddler Technical
Twiddler Legacy Instructions
Using the Twiddler 4
Using the Twiddler 3
Twiddler Tuner
Typing Tutor
Twiddler Technical
Twiddler Legacy Instructions
Here are the steps to upgrade your Twiddler 4 firmware: