This document in KB describes how to bring-up WinCE on VF61 modules.
One important note is this one:
Attention: Some SD card may not work because of the way they are structured. On that SD card, we need to restore https://docs.toradex.com/103544-vybrid-recovery-image.img and replace the files from the latest package to make SD card work.
It would be useful to add a note on how to restore the image (for example with Win32 DiskImager tool).