https://bugs.freedesktop.org/show_bug.cgi?id=79980
--- Comment #82 from Alex Deucher agd5f@yahoo.com --- (In reply to comment #80)
I have got the new firmware (unless there's an even newer one) and have booted into the other 3.17 before - but it eventually crashed due to missing fixes.
When did you download it? The header format changed last week and I uploaded a new version.