Solution 15468: Unlocking a Program on the TI-89 Family, TI-92 Family and Voyage™ 200 Graphing Calculators.
How can I unlock a program on the TI-89 Family, TI-92 Family, and Voyage 200?
Program authors usually lock programs to prevent access or modification to the existing programming code. However, a program can be unlocked on the TI-89 Family, TI-92 Family and Voyage 200 calculators by following the steps listed below.
• Press [2nd] [-] to access the VAR-LINK menu.
• Scroll through the VAR-LINK screen and highlight the program that needs to be unlocked.
• With the name of the program highlighted, press [F1] .
The lock symbol should now be removed from the name of the program.