When powering off your fx-7400Gii, fx-9750Gii, fx-9860G or fx-9860Gii, you are shown a nice Casio logo.
This logo is in fact a BMP image included in the OS - and from now on, a new tool is going to let you overwrite that image!
![Wink ;)](https://www.omnimaga.org/Smileys/classic/wink.gif)
You can now fully customize your Casio calculator - why not putting an image with your nick in order to prevent theft?
![Wink ;)](https://www.omnimaga.org/Smileys/classic/wink.gif)
The BMP image has to be in 128 x 64 pixels, with 1-bit color depth.
This format is refered as
"monochrome Bitmap" in some softwares, and in other softwares you just get it by setting an indexed image with a 2-colors palette.
For exemple, GIMP is able to read this format although it won't accept to write it as far as I know - but the simple Microsoft Paint everyone has with Microsoft Windows is able to do it!
![Grin ;D](https://www.omnimaga.org/Smileys/classic/grin.gif)
![](https://www.omnimaga.org/Themes/default/images/gpbp_arrow_up.gif)
And for those who won't believe in a single image, here's the video:
![Wink ;)](https://www.omnimaga.org/Smileys/classic/wink.gif)
It might be possible to perform the same thing in color with Casio Prizm fx-CG10/20 and Casio CladdPad II fx-CP400, but I haven't investigated yet if a 3rd party OS flasher like fxRemote is available for those models.
Source & Downloadhttp://tiplanet.org/forum/viewtopic.php?t=12785&lang=en