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Unsigned - Downgrade from OS 2.55


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Ranked as 2228 on our top downloads list for the past seven days with 6 downloads.
Ranked as 1 on our top rated list with a weighted average of 9.92.

Filename unsigned.zip (Download)
Title Unsigned - Downgrade from OS 2.55
Description This program allows you to downgrade your calculator from OS 2.55. If you bought your calculator after August 2011, most likely your boot code (1.03) will not allow you to downgrade. This program applies a patch that will let you install any operating system you like, including 2.43. This program also allows you to put you name on the about screen.
Author Brian Coventry (bcoventry77@gmail.com)
Category TI-83/84 Plus Assembly Misc. Programs
File Size 6,411 bytes
File Date and Time Sun Sep 25 20:17:06 2011
Documentation Included? Yes
Source Code Included? No



Review by  Jake J
Reviewed on 2020-03-05
PERFECT! Does exactly what I was looking for. My TI-84Plus manufactured in 2017 now has 2.43 (instead of the slow 2.55MP), just like my TI-84Plus manufactured in 2008. Nice and snappy instead of sluggish.


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Archive Contents
Name Size
Unsigned v1.0/readme.txt   6177
Unsigned v1.0/unsigned.8xp   3770

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