It might be wise to let Zen manage this rollout for their customers, actually.

Just saying, as an ex-IT guy who knows what it's like to support users...

Yeah, although those who are capable of fiddling with device firmware on their own are rarely a headache in my experience.

Ha, ha - yes, normally.

But the big issue here is that this is basically beta code. And could have unknown issues.
And with it being a router, this includes possible security risks.

Need I say more?

Thank you sooo much.

Having waded through all 27 pages I would like to express my gratitude to all of the information provided.

I was lucky in that Zen did not update my router until 3 days ago. Soon afterwards I started receiving the dread reboots but thankfully only every 8 hours or so.

Armed with the information about the TEST version of firmware I was able to call Zen and get them to remotely load the f/w - which I decided was much easier than doing it myself (although capable). I also wanted Zen to know that they were still rolling out a flawed version.

I did learn that Zen are in discussion with AVM regarding this issue but the agent was unable to provide any detail. He did mention that early thoughts were "hardware" but they have "now changed focus".

My 7530 is the 1st model. ADSL/POTS

24 hours since the update my router has been stable.

While I'm frustrated that Zen were knowingly pushing out a flawed update for over a month, I will stay with Zen as there service has been reliable for a long time and more importantly I can pick up the phone and easily get through to UK based Tech Support team. In contrast I'm tearing my hair out with my Father-in-law's BB supplier (FTTP, was BT now migrated to EE) as it is now IMPOSSIBLE to talk to anyone. Sadly, my FiL didn't pick Zen as I suggested.

In reply to a post by amyb5312:

My last chat with Zen was about 2 hours before you on Tuesday! Can I ask - How is your router behaving now?

Sorry I've been rather tied up this past week and only just got around to checking this thread again. My router has been absolutely stable ever since the beta firmware was installed, not a single reboot. Have had a handful of VDSL drops but it looks like Zen have been logging in remotely via TR069 to look at things and maybe adjust settings for monitoring how the new firmware is behaving.

Just for info. Zen updated my Fritzbox 7530 from v8.00 to v8.00-116930 this morning without me prompting them. I don't know if this is the permanent fix for the rebooting issue, or just another temporary (and very late) work around.

The reboot issue hasn't been an issue with me since I put a separate modem between my VDSL line and the Fritzbox.

AVM still appear to be peddling their (now known to be defective) v8.00 firmware on their website. I think this is shameful, and has put me off AVM products.

I find it difficult to imagine how AVM could have handled this issue (which should never have occurred in the first place) any worse than they have.

Same here. Just seen OS updated to: 8.00-116930 PLUS. Let's see

If anyone is looking for the update file to update from the faulty v8.00 to v8.00-116930 PLUS, which does appear to fix the Fritzbox 7530 rebooting issue, it can be found here:
https://service.avm.de/downloads/LaborPlus

Defective as in Zen-branded routers or defective in respect of all 7530s? I suspect the former.

There is a certain irony here. Had Zen customers been allowed to download beta/labor updates, the issue would have become apparent. All beta/labor updates have an inbuilt capability to revert back to the previous OS. The irony is that Zen is now deploying labor/beta software as a fix.

I have long thought it unwise to ‘buy’ a locked router from any ISP. I have used Fritz!Boxes for over 10 years with just one box failure after 4 years that AVM replaced on request. My 4060 hasn’t missed a heartbeat in 2 1/2 years.