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sonices
4th February, 2016, 02:27 PM
Code: 7856, SN: FDC2005-M121226, 4M5T-18C815-AE

CPU ST92F250CV2

On display "ENTER CODE ---- 15"
Dump si in attachment
Need reset counter

Thanks

cubica1
4th February, 2016, 02:36 PM
hmmm...code is in OTP part (can not be changed), counter is in eeprom part, I think :(
rgds,
cuby

sonices
4th February, 2016, 02:42 PM
Found solution:

1. Select Flash area and READ FLASH (save file to disc)
2. Select Flash area and click on ERASE:
3. Select Eeprom area and click on ERASE:
4. Select Flash area, LOAD file previously read out in point 1. and click on WRITE:
5. Disconnect device, wait about 10 seconds, reconnect power supply and wait some seconds - try to power on.

It was on Martech forum, now i found it.

sonices
4th February, 2016, 02:46 PM
With this solution you can also fix NO AUDIO problem
355991 Here is connection for ST92F250

cubica1
4th February, 2016, 07:59 PM
possible, on that way MCU will (after restart) write eeprom to default state. I have ST92F programmer from Garik Baza (v3) so I am able to do the same directly into eeprom w/o flash r/w, restart..etc...
rgds,
cuby

sonices
4th February, 2016, 10:47 PM
I have never had lock15 on this unit, but after this type of reset every time when i turn radio on it says Not configured ,and then works normaly. I have set up time,date etc radio is in car but message Not configured appiers allways, but it is not big problem.

Allky86
3rd February, 2017, 03:19 PM
Hew the same problem?what I must do reset counter

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