Preliminary checks and steps :
- P0) Supported models :
Check you have one of the followingCasiomodels :- fx-9750GII
- Graph 35+/35+E/75/75+/75+E/95/85(SD)
- fx-9860G(SD)
- fx-9860G Slim/AU/AU+
- fx-9860GIIs
- fx-9860GII(SD)
- fx-7400GIISH3
- Graph 25+ProSH3
If you have anfx-7400GII/Graph 25+Pro, check its processor type.SH4
fx-7400GII/Graph 25+Promodels can neither been upgraded nor updated. - P1) Choose your OS upgrade :
Recommended and compatible OS upgrades :model namefx-7400GIISH3fx-9860G Slimfx-9860Gfx-9750GII/9860GIISH3fx-9860GIIsfx-9750GII/9860GIISH4french nameGraph 25+ProSH3Graph 85Graph 35+/75/95SH3Graph 35+E/75+/75+EGraph 35+/75/95SH4australian namefx-9860G AUfx-9860G AU+compatible upgradesfx-9750GIISH3 /Graph 35+SH3specific patch any SH3 OS any SH4 OS best upgradeGraph 35+
2.01(exact calc)fx-9860GII/Graph 75/95
2.04 SH3
to patch(exact calc
+ vectors)fx-9860GII/Graph 75/95
2.04 SH3(exact calc
+ vectors
+ apps support
+ 1.5MB storage)Graph 75+E
2.05(exact calc
+ vectors
+ french exam mode)other upgrades (if regulations
don't allow you
the best)fx-9750GII
2.01(no exact calc)fx-9860G Slim
2.00(no exact calc
+ no vectors)fx-9860G Slim
1.11(no exact calc
+ no vectors
+ no conversions)fx-9860GII/Graph 75/95
2.08(no vectors)fx-9860G/Graph 85
2.01(no exact calc
+ no vectors)Graph 75+E
2.09(no vectors
+ french exam mode)fx-9860GII
2.09(no vectors
+ generic exam mode)fx-9860GIIs
2.09(no exact calc
+ no vectors
+ generic exam mode
+ no conversion)
If your model name appears in both last columns, then you have to determine its processor type.
About the different exam modes :- French exam mode : no expiration, elapsed time cannot be checked, PRGMapplication not disabled
- Generic exam mode : 12 hours expiration, elapsed time can be checked with
ALPHA
(-)
,PRGMapplication disabled
- French exam mode : no expiration, elapsed time cannot be checked,
- P2) Elements needed :
- a PC running Windows XP or newer
- the right calculator to computer link cable :
- if your calculator has an USB port, usually on the top-left corner as pictured, its USB(A)↔mini-USB(B)cable
- if not, you'll have to use the mini-Jack 2.5on the top-right corner, and will require a compatibleUSB(A)↔mini-Jack2.5interface(for example, http://www.util-pocket.biz/catalog/prod ... cts_id=424 )
- if your calculator has an USB port, usually on the top-left corner as pictured, its
- P3) Computer setup :
If not already done, download and install theFA-124linking software.
This is going to install the calculator drivers too.
A) Get the OS upgrade image :
Get an image of the OS you'd like to upgrade to either from the Internet, or from a real calculator already running it.
In the later case :
In the later case :
- borrow the calculator running the OS you'd like to upgrade to for some time
- choose and download the appropriate backup tool :
- fxBackup205if you have an SH4 calculator with Boot Code2011.0531.1709
- if not, fxBackup204if your OS version is 2.04 or higher
- for all other cases, original fxRemote2.03
If needed, check your Boot Code. - right-click the downloaded zip file to extract its content to a real computer folder, and go into that folder
- launch the right tool
- connect the borrowed calculator to the computer
- put your calculator in OS Errormode
- click the Backupbutton in the tool window, type the file name and confirm
- once the backup has completed, press the restart/Pbutton on the back of the calculator
B) Patch the OS upgrade image for your model :
- download the polyOS tool
- right-click the downloaded zip file to extract its content to a real computer folder, and go into that folder
- drag and drop your OS image on the polyos.exefile in that folder
This should create in the same folder :- if supported, a file with the 2M suffix for an fx-7400GII/Graph 25+Pro/25+EcalculatorIn that case, the OS being bigger than the model ROM, the tool may prompt you for the non-english languages you'd like to keep on the calculator.
- a file with the 4M suffix for all other calculators
- if supported, a file with the 2M suffix for an
C) Prepare the computer to flash :
- download and choose the appropriate flashing tool :
- fxRemote2M4Mif you are attempting to upgrade afx-7400GII/Graph 25+Procalculator
- if not, fxRemoteE205if your have an SH4 calculator with Boot Code2011.0531.1709
- for all other cases, the original fxRemote
If needed, check your Boot Code. - right-click the downloaded zip file to extract its content to a real computer folder, and go into that folder
- if your calculator has an USBport, now just run the rightfxRemote
if not, you need to identify your interface cableCOMport :- start by listing your currently available COMports :
- be sure your interface cable is disconnected from the computer
- launch the right fxRemotetool
- in the cablezone, select the3Pinoption
- if the option is greyed out, then your currently have no COMport
if not, note the availableCOMports in the then appearing drop-down menu - close fxRemote
- now connect your interface cable to the computer
- relist the now available COMports :
- relaunch fxRemote
- in the cablezone, select the3Pinoption
- note the available COMports in the then appearing drop-down menu
- close fxRemote
- relaunch
- you should have found 1 additional COMport - that's your interfaceCOMport, just select it
- start by listing your currently available
- if you are attempting to upgrade a fx-7400GII/Graph 25+Procalculator, check the"Recover Main memory backup area"option
D) Prepare the calculator to be flashed :
Put your calculator in
OS Error
mode.E) Reflash the calculator :
- in the fxRemotewindow, click theRecoverbutton, and specify the right 2M/4M postfixed patched image.
- Confirm the process.
- Once and only once the process has completed and that the calculator has restarted and is back to the applications menu, press the restartorPbutton on its back.
- end of the tutorial -
Annex :
CPU type check :
Go to top
- type
MENU
, then go into theSYSTEMapplication - type
F4
to get the system versionYou should have the version string displayed as XX.XX.XXXX, with a digit in place of each X. - Look at the last digit, thus the 8th one with this format :
- If it's a 0, then you have an SH3 model.
- It it's a 1, then you have an SH4 model.


Boot Code check :
Go to top- turn the calculator off
- press and hold
OPTN
x10^x
on Graph models, orOPTN
EXP
on fx- models - without releasing these 2 keys, press and hold
AC
You should get a DIAGNOSTIC MODE popup - now release all 3 keys
- type
F1
and then9
You should now get the diagnostic menu - type
4
You should now get 2 datestamps, a DateO one, and a DateA one. The DateA one is your Boot Code datestamp.
OS Error mode :
Go to topTo put your calculator in
OS Error
mode, depending upon your model :generic model name | fx-7400GII / fx-9750GII / fx-9860GII /GIIs | fx-9860G / fx-9860G Slim |
french name | Graph 25+Pro /25+E /35+ /35+E /75 /75+ /75+E /95 | Graph 85 |
australian name | fx-9860G AU+ | fx-9860G AU |
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