Some users of my custom firmware have reported problems associated with USB drives formatted as ext3 not being read correctly.
I have located the source of this problem and have now released a fix which addresses this issue.
Anyone using release 3 of the package should reflash their HDR using this bugfix release to avoid any future problems with USB drives.
The main bundle has been updated with the fix and can be downloaded from the original link at the head of this thread
However, for convenience the
Foxsat-HDR_upgrade.hdf only can be downloaded from
here.
Many thanks to REPASSAC for testing this fix prior to release.