Jun 18, 2009
09:22 AM
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Jun 18, 2009
09:22 AM
Hello,
I recently programmed a FX2 EZ-USB EEPROM with a firmware that had some warnings, mainly linking problems. Now the device is not recognized anymore by the computer; "unknown device".
In that case, how can I reprogram the EEPROM with an old working firmware?
thank you
I recently programmed a FX2 EZ-USB EEPROM with a firmware that had some warnings, mainly linking problems. Now the device is not recognized anymore by the computer; "unknown device".
In that case, how can I reprogram the EEPROM with an old working firmware?
thank you
5 Replies
Anonymous
Not applicable
Jun 18, 2009
01:16 PM
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Jun 18, 2009
01:16 PM
Disable the EEPROM connect the device and then enable the eeprom and program it...
Jun 19, 2009
02:02 AM
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Jun 19, 2009
02:02 AM
But how can I disable the EEPROM if the device isn't even recognized by the computer?
Anonymous
Not applicable
Jun 19, 2009
04:51 AM
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Jun 19, 2009
04:51 AM
in the dvk they have switches to disable the EEPROM (hardware disabling)... are you using a custom board with no jumper or switch to disconnect the EEPROM from the i2c line????
Jun 19, 2009
04:58 AM
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Jun 19, 2009
04:58 AM
I am afraid, yes
Anonymous
Not applicable
Jun 19, 2009
07:56 AM
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Jun 19, 2009
07:56 AM
FX2LP if it finds a valid first byte it will load the EEPROM image... to stop that you'll have to take care that the EEPROM and FX2LP do not communicate during boot-up.... either remove the EEPROM from the line or manipulate the EEPROMs power or address lines....