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Latest firmware upgrade failed!
11-07-2015, 11:43 PM
Post: #1
Latest firmware upgrade failed!
Today I tried to upgrade the firmware of my Prime (HW version A) but it failed early on. The SW version I tried is: 2015 6 17 (8151).
This procedure does work succesfully with my HW type C calculator (I have both).
Now the calculator (type A) is unstable: does not respond, just shows: x^2 + y^2=1
hard reset (with the little pin to the back) does not do anything.
No connection to PC possible -- dead in the water. Confused

Please advice how to procede.


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Latest firmware upgrade failed! - GDelmulle - 11-07-2015 11:43 PM

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