Embedded firmware upgrade message.

[Sylhouette]

Hello all.
I use 1.2.3.rc3 on my soekriss boards.
The update files have a extension of img.gz, but the message when flashing the firmware tells me to use the .tgz file.

I guess it is of no importance, but it would look more right if it tells me to use .img.gz files instead of .tgz files like on the full install update files.

regards,
Johan