I am new here and need some help. :-)
After programming a lot of navigation functions and using my FX-9860GII SD for many years, I didn't use it for a while.
Now I replaced the batteries but can not use the calculator anymore. Local service center is unable to help.
When turning the calculator on I get the message: (I still can turn it on/off)
TARGET = 0014004F
PC = 8801BFB8
Apparantly the boot doesn't go the right way and stops at the above address.
The message itself is not documented, neither what am I supposed to do about.
The addresses could help to anyone who has the compiled system source and the loading map to figure out the reason.
If I wait more than 10 minutes I might get into service mode by pressing and holding+ +
Tests run OK.
If I hook up the calculator (OFF) to the PC, the communication menu shows on the screen.
But there is no way to connect to the FA-124 program. The program jumps to the above error message.
Is there any way to completely reload the flash memory via USB without the bootstrap which is apparently damaged?