[Update in the comments]
Hello all! I've got a controlled mechanical ventilation system (system D) at home from Zehnder (ComfoAir Q600). I've even got their controller box (the LAN-C) so I can use smart home stuff with it. It works perfect on home assistant, even when blocking the controller on the router level from the outside world. Maintenance wise, they try to force a contract on you, but it is easy peasy to maintain and repair so I'm not having no maintenance contract.
Comes the issue of software and updates. Some updates come with features. Sometimes, they are even mandatory so addons can work on them (ex: small heat pump for the intake needs a recent version for setup). For this, you have to use their app on your phone/tablet. The whole idea is that the install goes trough your phone (with checksum check through the app) to the EEROM on the local network to prevent bricking of the unit. Updates bring usually nice settings, and are sometimes mandatory for some add-ons (ex: heatpump for pre-heating or pre-cooling needs a recent update to be set up).
Here comes the really annoying part that makes me grump a lot: to update, of even for some diagnose option, you need to access a special level. Not the beginner mode. Not the expert mode. Not the installer mode that is unlocked with a simple pin code available in the owner's manual. No sweet child, you need to be a registered installer with Zehnder to access to get updates and real diagnostics. Officially, it is to prevent bricking the controller with an update by an user. But it is possible to give access to a licensed installer so they can update remotely and run diagnostics. So an issue with your internet, and there is no more safeguard to protect you from bricking stuff. Really, it is just to force a maintenance visit (200€ to exchange filters and clean a bit the exchanger and the inside with some soapy water). I don't like to bend over while I'm getting fucked without my consent, so you guess while this pisses me off. I called once to get an update (some companies ask you a hefty sum for that), but instead of getting an account they just updated it once exceptionally.
There is tho in the official documents for Germany, a test code publicly accessible, that allows you to access diagnostics and updates. But the updates there are only for German units. Pretty sure it is the same unit for the whole damn continent, but hey, let's pretend the units are different.
Comes my question: how do I trick the system into believing their update is not for the germans, but for somewhere else? Or even better, to give me access for updates for other areas? I know part is server side (account), but I'm willing to bet they don't really care about securing access to the updates once you have authenticated yourself (with the german test code). Tried lucky patcher, but didn't get lucky.
Any idea what I could try (even Lucky Patcher wise)?
Big hugs and kisses
I swear I thought you just made that name up
I wish ! But architects and building engineers you know. The building sector is filled with mysteries beyond logic. For example, I still don't know why it's such a hassle to have real HVAC in centralised ventilation systems in Europe. Or integrated solutions to move energy to other systems (like my water heat pump releases cold. Why am I out of warranty if I place a heat exchanger that cools my fridge heat exhaust on the air rejection?). Without floor heating air-water heat pumps aren't super efficient, and retrofitting baseboards with water-heated ones for baseboards in a bitch to do.