I suspect given that Fritz!boxes are used by many German ISPs that a few beta reports didn’t suggest anything of significance. How many Zen Fritz!box users actually download beta/labor firmware for their boxes?

A very quick Google suggests that DSL standards might be different between the two countries. But I stress it was a quick cursory Google.

In reply to a post by countryman69:

But the chipset on the 7530 hasn't changed between version 7.59 and 8.0

Agree, but the code has. I wondered if there was something introduced in the new code that affects one chipset but not the other since they're from different manufacturers. Dunno 😊

Edited by Tacitus (Mon 04-Nov-24 11:03:10)

Seems to be some confusion.

The chipset changed between v1 and v2 of the 7530 box.

Both v1 and v2 versions of the 7530 worked fine on v7.59

Both v1 and v2 versions of the 7530 don't work properly on v8.0 (source AVM)

Both v1 and v2 versions (TBC) of the 7530 work OK on v8.0 IF they use an external modem or dongle ie no DSL involvement

Which prima facie suggests that the DSL component of v8.0 is the cause

BUT...

reverting to the earlier DSL component on 7.59 ...the reboots still occur.

If you want to know if you have a v1 or v2 version of the 7530, I now know that the v2 has a Typ B at the bottom RH corner of the label on the underside.

Type v1 7530's have nothing because at the time AVM did not know if there was going to be any later versions

(Source: AVM)

One question useful to know is if anyone getting the reboot is running on a Typ B.

Mine was Type A

Mine is also a Type A (there's no mention of Type B on the sticker underneath).

Update for the benefit of anyone who comes to this later

I did perform the factory reset and attached direct to the test socket - like others who have commented, there was unfortunately no improvement. Spoke to Zen again and they sent me a 7530 AX which has been stable on OS 8.

(Out of the box, it was on OS 7.81 but updated itself to OS 8 several hours later.)

Fingers crossed all stays well from here. As always, many thanks to the posters on this forum.

In reply to a post by countryman69:

The chipset changed between v1 and v2 of the 7530 box.

I didn't realise that as I thought the change of chipset happened with the introduction of the AX version.

In reply to a post by countryman69:

Which prima facie suggests that the DSL component of v8.0 is the cause
BUT...
reverting to the earlier DSL component on 7.59 ...the reboots still occur.

Can't fault your logic.

Latest message from Zen:

Please remain on the existing version and when we are ready to start rolling out the updated firmware we will do this automatically in waves to ensure that everything remains working.

I hope that this helps - Alex P