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Messages - TeamFX

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46
Casio PRIZM / Re: Extract Prizm OS 1.03+ from the updater
« on: September 07, 2013, 09:50:46 am »
On OS versions 1.xx, was there already a checksum like the OS 2.0x 0x24FFF8 checksum?
At which offset?

From OS 1.00 to OS 1.02
- OS checksum at 0x26FFF8
- Calculated as sum of 0x10000..0x26FFF7

From OS 1.03 to OS 1.11
- OS checksum at 0x26FFF8
- Calculated as sum of 0x10000..0x22FFFF + 0x260000..0x26FFF7

From OS 2.00 to OS 2.04
- OS checksum at 0x24FFF8
- Calculated as sum of 0x10000..0x24FFF7

47
News / Re: HP-Prime firmware and softwares leaked to the Internet
« on: August 21, 2013, 10:28:41 am »
The password for firmware.zip is: Prime

48
Casio PRIZM / Re: Extract Prizm OS 1.03+ from the updater
« on: August 02, 2013, 03:05:07 pm »
Quote
I don't understand why the fx-9860G Slim stopped being updated.

According to Casio, the fx-9860G Slim is very popular in Asia (like the Casio dictionaries) and some OS 2.00 features are banned there.

Slim OS 2.00 is available here: https://edu.casio.com/data/fx0909/9860slim_osup_200.zip
Casio said they did not make a Slim OS 2.01 setup.

49
Casio PRIZM / Re: Extract Prizm OS 1.03+ from the updater
« on: August 02, 2013, 11:11:06 am »
Actually, there are five images in the GII OS 2.01 setup included, but they are effectively the same. The only difference is at address 0x24FEE0 (being a copy of the boot code data at 0x300) and the checksum at 0x24FFF8. This is probably used to check whether the OS image runs on the correct hardware.

Those five images should correspond to:
fx-9860GII
fx-9860GII SD
fx-9860G AU PLUS
GRAPH 75
GRAPH 95

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