In stores we can find many different monochrome graphic Casio calculators:
- fx-7400GII
- fx-9750GII
- fx-9860G
- fx-9860G SD
- fx-9860GII
- fx-9860GII SD
But what is less visible, is that those models can come with OS 2.00, 2.01 or 2.02.
There is no update for OS 2.02 on the Casio site, which is normal since it comes preinstalled only on calculators using the new hardware based on an SH4 processor (different from the SH3 processor in the old hardware), and is therefore incompatible with the calculators using the old hardware.
This new hardware also causes many problems, since the majority of add-ins are incompatible with it, and since the Casio SDK has not been updated yet to generate add-ins compatible with the new hardware.
But fortunately if you still have a calculator with the old OS 2.00, OS 2.01 brings many bugfixes and improvements over the 2.00 OS, and you can therefore enjoy the software benefits of OS 2.02 without having the hardware drawbacks after updating.
These benefits include a better choice of the calculation mode, exact or approximate - which could give completely different and therefore totally wrong resultes with OS 2.00:
(http://i33.servimg.com/u/f33/13/23/13/53/image310.jpg)(http://i33.servimg.com/u/f33/13/23/13/53/image110.jpg)
(http://tiplanet.org/forum/gallery/image.php?mode=medium&album_id=13&image_id=1317)
2.01 update installers for the fx-9860G and fx-9860GII can be found on the Casio site.
And what about the fx-9750GII?
Casio has simply never released any update installer for this model.
However, this model has a 4MB Flash ROM, exactly like the fx-9860G and fx-9860GII! :o
So the ROM can perfectly be reflashed with a new OS and Casio just didn't bother to develop an update installer for this entry-level model. Therefore, it is impossible to update officially.
But fortunately, I've released a tutorial which will allow you to update your fx-9750GII to the new OS 2.01 and calculate better!
Link:
Tutorial to update the Casio fx-9750GII from OS 2.00 to OS 2.01 (http://tiplanet.org/forum/archives_voir.php?id=6737) (in french for now)
Source:
http://tiplanet.org/forum/viewtopic.php?t=10343&lang=en