Anyone having problems with firmware 3.8.9.1_BT?

Seems like BT have changed something recently as my DSL line would modulate fine but login failed under the old firmware 3.8.8. However it seems like new firmware is buggy in some way because the router keeps rebooting sporadically and then reverting back to old version of the firmware.

So I'm stuck between either having intermittent freezing a rebooting under 3.8.9 or no DSL line under 3.8.8.

Is anyone having similar issues?

Simon

Actually going to post this on the right board rather than the wrong one.
See https://forum.draytek.co.uk/viewtopic.php?f=14&t=22497

updated to 3.8.9.2._BT

all ok after 48 hours