NtxHwCfg is a simple utility for dumping or comparing hardware configurations used by NTX. NTX is an OEM which manufactures Barnes & Nobel and Kobo eReaders. The utility is available for both Win32 and Android. It has been updated to the HWCONFIG 3.5 version

Download ntxhwcfg.exe for Win32

Download ntxhwcfg for Android

The configuration file itself is on the device in unpartioned space. You may make a copy of the configuration by:

dd if=/dev/block/mmcblk0 of=cfg skip=1024 count=1

You may write back a modified configuration by:

dd if=cfg of=/dev/block/mmcblk0 seek=1024

Warning: Note the difference between "skip" and "seek"! A bad configuration will break your device. You would need to disable the internal flash and boot up using a u-boot that ignores the NTX hardware configuration.