Introduction
While humanware adds cool new features sometimes, the result is often not what you’d expect.
While these features can be nice to have, you may wish to downgrade due to bugs.
So, can you downgrade the software?
The answer is yes, and you will learn how in this blog post.
Step 1: Download the software
Go to Humanware’s Mantis Q40 Support Page
Then, move down by heading until you get to Frequently Asked Questions, then move up by link to get to Version 2.0.0
Step 2: prepare the downgrade
Now that you have found the correct download, you need to prepare the file for your Mantis Q40
You’ll need a USB drive or SD card to complete this process.
First, copy the file from wherever you downloaded it to and put it on your USB drive or SD card.
Next, rename the file to something higher than your Mantis Q40’s version and build number.
For example, if your version number is 2.4.0 and your build number is 4230, your file name should look something like BrailleReader_V2.5.0_build4500.swu
Step 3: Perform the downgrade
NOTE: The mantis Q40 must have at least 50% charge and be plugged in to do this process.
To perform the downgrade, insert your USB drive or SD card into the Mantis Q40 and you will see a prompt asking if you wish to install a software update.
Press “o” to move the the OK option, then press enter and wait for the process to complete.
Final Notes
If you are reading any books, you should make a file with some text from the book that matches where you are reading as your spot will be lost.
You will only have to find your spot again once, and everything will be fine from there.
Your braille profile will need to be switched to contracted braille if you had it that way previously.
To do this, press alt + Ctrl + G.
Conclusion
Downgrading the software being a good way to resolve bluetooth connectivity errors for your Mantis Q40, it also unlocks more benefits like being able to open large books, which was a functionality removed in later versions of the software for the Mantis Q40.