Disable EEPROM Writes

In some cases, it may be desirable to disable the ability to write to the device EEPROM. This can be accomplished through a ConfigData bit in the FTDIBUS INF file.

The driver can be made to ignore any EEPROM write requests by setting bit 0 of the ConfigData field as shown in the INF fragment below:

   [FtdiBus.NT.HW]
   AddReg=FtdiBus.NT.HW.AddReg

   [FtdiBus.NTamd64.HW]
   AddReg=FtdiBus.NT.HW.AddReg

   [FtdiBus.NT.HW.AddReg]
   HKR,,"ConfigData",0x00010001,1


which corresponds to the registry key

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\{Device VID, PID and interface}\{Serial number}\DeviceParameters\ConfigData