Maybe the device partition corrupted. I tried 0.7, 0.8, 0.9, New download 0.9 from snapshot. I will try a hard reset.
Edit:
Not worked. Error 006 continously.

1. Reset the device
2. Jailbreak from snapshot - Updated succsesfully
3. Python from snapshot - Update Error 006
PW1, FW 5.4.4