I've not followed all of this thread not being a Zen subscriber.

However, I was looking at the OpenWRT website and according to that the 7530 has a Qualcom chipset whilst the 7530AX is Broadcom based and not recommended for flashing to OpenWRT.

No idea but given the reports that the AX model works fine with V8, whether the difference in chipset could be part of the reason for the problem.

Have you actually specifiically requested that Zen send you a 7530AX?

If so, have they refused? Or said "they don't have any more left?" or somesuch BS?

If so, I'd suggest you get right back to them and tell them to ship you one this week or say goodbye to you as a customer.

In reply to a post by NewMoon:

IP change is only in order to use ftp. Recovery works fine without manual change - recovery software does all the necessary changes automatically.

Yea I needed to do the FTP thing to de-Zen it and switch to 10Mbps/half duplex to get it to take.

It was a bit of a faff, but eventually downgraded to 7.59 after a few attempts - obviously made sure it doesn't auto upgrade in future! Lost my config in the process, but nothing major - at least it hasn't rebooted since! Now just need to wait for the DLM to ease up on the line...

Thanks a lot for your link/instructions - most appreciated

In reply to a post by Tacitus:

No idea but given the reports that the AX model works fine with V8, whether the difference in chipset could be part of the reason for the problem.

I got the impression it was crashing under load/lack of resources - AVM have done a good job sweating the hardware keeping it reasonably current. It's a shame 8.00 was a bit of a miss, look forward to seeing how 8.01 (or whatever) behaves on the venerable 7530.

Congratulations!

I called my ISP (Plusnet) and simply asked them to reset DLM. The agent did it while on the call, and so far so good - the line went up immediately from 29/4 Mbps to 76/15. It's not precisely 80/20 that I had earlier, but I'm not complaining.

Edited by NewMoon (Sun 03-Nov-24 21:47:13)

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

Edited by countryman69 (Sun 03-Nov-24 22:22:20)

Sorry to mislead. My 7530AX is a loan from Zen.

Hello, all. This thread has been useful to me, so I'd like to add a data point.

I have a 7530 that was quite stable until I patched it to 8.00, after which it crashed half a dozen times a day. I bought it new and unbranded through Amazon four years ago. My provider is Pulse 8, a reseller for TalkTalk, and the underlying connection is FTTC provided by Openreach.

Selecting "Previous DSL Version" did not help, nor did a factory reset (reconfiguring from scratch, not from a saved file). The repair program found the ethernet port, but could not find the box (this running in Wine under Ubuntu; I have no Windows PC).

Yesterday I disconnected VDSL and tethered the 7530 via a 5G phone. Since I made this change, the box and connection have been stable.

I am not at all pleased with AVM, and will not buy their products again. To continue to apply a patch three weeks after knowing that it causes boxes to crash is unforgivable.

That’s what I posted yesterday evening. A dongle is another name for a mobile network modem.

I have zero sympathy for the predicament that AVM and Zen are in. I was running the beta version since early October and highlighted to AVM on several occasions that, when the box was apparently losing the DSL connection, there was also loss of wifi connection to the router and that the Event Log only had one entry in Internet Connections.

Now clear to me that no-one at AVM joined the dots and didn't pick up that in a 'Real World' environment that the router would frequently reboot. They probably thought 'What does he know'. Great pity that no-one in AVM picked up on the clues and halted the release. Or Zen's technical department who took their eye off the boil. Probably too busy getting all excited about eero routers.