UPDATE: The flash image I have here doesn't works for those of you with the OS version 2.01.0700 nor 2.02.****. If you try to hack your calculator with this flash image and you have one of this versions, the calculator won't simply update. It will work normally. If you have or find an image for this versions, please contact me or simply post a link to them in a comment.
UPDATE 2: New flash images have been caught in the wild (thank you Matt Warta for finding them). Here is the link to the original page: http://www.cncalc.org/thread-8335-1-1.html
If you're having problems downloading the file, go here: http://www.mediafire.com/download/pm9c6tbc0x8z3c2/fxRemote.7z
The download contains the new fxRemote, all flash images for the new OS versions as well as instructions on how to update your calculator. The process may be very similar to the one below (except if you're using a SLIM).
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Have you ever desired to have add-ins in your fx-9750 GII? Or to have a fractional result instead of a decimal when solving polynomial equations? Of course you have. Now you can have the fx-9860 GII operative system in your fx-9750 GII or fx-9860 G, run add-ins and much more! So, I’m going to explain how to do it. It’s not very hard. If you don’t understand something, post a comment and I’ll make a video, if possible.
So, first of all, you’ll need two simple things:
- A modified flash image of a fx-9860 GII (LINK)
- A program to transfer the flash image to your calculator (LINK)
Be aware that those files are not mine and I don't own any part of them.
Download booth and now I’ll start explaining the process.
HOW TO HACK YOUR fx-9750 GII OS (The process is the same for the fx-9860 G, but not for the Slim) (This is the old procedure. The new one is very similar but be careful with which flash image you choose):
1 – Open pfxRecover_Beta
2 – Plug your calculator to your computer, press F1 (transfer data) and cancel it by pressing AC
3 – Turn off your calculator
4 – With a pencil or something sharp, press the Restart button in the back of your calculator and keep pressing it
5 – While pressing the Restar button, hold F2 + 4 + AC
6 – Release the Restart button and then the rest of the buttons
7 – After releasing, quickly press 9, release and press x (multiplication sign)
8 – Wait until de OS Error screen appears on your calculator. Don’t be scared with that. It’s completely normal.
8.1 – Now, your calculator automatically connects to your computer if it’s correctly plugged
9 – Return to pfxRecover and press Recover
10 – Select the flash image (if you didn’t change anything, it should be named 2_00_0200.fls)
11 – Wait until the update is complete. Don’t worry with your calculator's screen. It will be fine!
After the update check if you have e-Activity and s-Sheet in the Main Menu. If you have, congratulations! You’ve hacked your calculator and you can now run powerful add-ins and have the powerful Math Input!
WARNING!
There is a small risk that this process may break your calculator. So, do it at your risk. I've already hacked some and it never happened.
There may be some minor errors. However, they are nothing special. For example, after adding some add-ins they sometimes don't appear on the Main Menu, but if you go to Storage Memory, they are still there. You'll probably have to initialize your calculator, which means you will have to delete everything.
Special characters may become odd. To solve this problem, just press the Restart button.
And other things that should not be a major problem.
