XPROG-M 35080 Reads only FF FF

[se93]

Ok so i am going to erase the M35080 and write back the original bin file and test cluster


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[se93]

Would a brand new M35080 programmed with original bin file but with my cars vin number and mileage set to 0 do the trick?


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[se93]

I think this may be the problem

This is an extract from the ST Microelectronics data sheet for the M35050 chip:-

The memory is organized in pages of 32 bytes.
However, the first page is not treated in the same
way as the others. Instead, it is considered to consist
of sixteen 16-bit incremental registers. Each
register can be modified using the conventional
write instructions, but the new value will only be
accepted if it is greater than the current value.
Thus, each register is restricted to being modified
monotonically upwards.
This is useful in applications where it is necessary
to implement a counter that is protected from
fraudulent tampering (such as in a car odometer,
an electricity meter, or a tally for remaining credit).

In other words, if the chip has previously been programmed (or updated) with higher mileage (or VIN) than has previously been stored, programming information will not be accepted (this could mean that it will accept the data, but will not run). I rhink i will need a new chip






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[teerak2uk]

Erase or new those are the options mate

[nikte]

what will happen when it reaches a maximum value of for example 999,999 ?

I think this may be the problem

This is an extract from the ST Microelectronics data sheet for the M35050 chip:-

The memory is organized in pages of 32 bytes.
However, the first page is not treated in the same
way as the others. Instead, it is considered to consist
of sixteen 16-bit incremental registers. Each
register can be modified using the conventional
write instructions, but the new value will only be
accepted if it is greater than the current value.
Thus, each register is restricted to being modified
monotonically upwards.
This is useful in applications where it is necessary
to implement a counter that is protected from
fraudulent tampering (such as in a car odometer,
an electricity meter, or a tally for remaining credit).

In other words, if the chip has previously been programmed (or updated) with higher mileage (or VIN) than has previously been stored, programming information will not be accepted (this could mean that it will accept the data, but will not run). I rhink i will need a new chip






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