Beste Arjen,
.....
Thanks for helping
Q2 2020? Wow that's new then.
I only know of Q4 2019.
Firstly I am not the manufacturer, nor a programmeur of sorts. I am professionally working in the Geo informaticus, I'm just glad to help by sharing my experience.
So it must be me, that I read it wrongly that I get a bad comment on the fact that there actually is a manual, so I'm falsly making statements. I know there is, but like it is said by your own comment about it: it is crap.
And after that you post a kazillion questions. Did you ťry to ask the manufacturer about it? Did you read everything and watch every YouTube post,besides Tweakers? If so a lot is already answered.
Like the worry about bricking it. Yes, as I stated before, that's possible. Just go to the dealer if you think it is a risk you don't want to take. But so is charging your car and so is using software.
But as I said, I'm glad to help so Here we go...
Q: why do you need a laptop in the car?
A: You don't, it is just easier.
Q: I also know from Tweakers that there are two updates now: Charging point update and a card update, both from 2020 Q2.
A: that's new to me but it seems wrong information. If you look on the actual Naviextras website, you'l see that it is not correct! The latstest map updates are from Q4 2019.
(By the way: I guess you meant map update instead of card update?)
Q: do I have to install these one by one and everytime format usb and get signature again?
A: yes
You did write it same this. (? what do you mean with this sentence?)
Q: Backup. But how to do do that with a system which is build in the car?
A: I have no idea, ask the manufacturer and when you get an answer be so kind to let us know.
Q: BTW do I have to choose for MGtouch when making account on Naviextras? The system in the MG ZS EV is the MGtouch am I right?
A: yes. A: it seems to me you already did, so what's the point of the question?
Q: Is this a problem or is everything OK when you put the signature usb in the PC?
A: Okay, yes. I chose Western Europe but it changed after signature to Western Europe (UK)
Q: These updates also could solve my charging points problem as I write before.
A: As I wrote before: No it won't. Read my comment again. At best it has more current Cp's but it's impossible to be update with the way it works. It takes time and money to update maps and waypoints. So by definition it is always behind reality.
Then this system is manually updated by the dealer or owner. So Q2 2020 actually means the last update is from Q1. The second Q is used to make the update package, checks if it doesn't brick the system and deploying it around the world.
If you want accurate and almost complete Cp information:
1- use Plugshare for putting in New or updating old information.
2- use ABRP for the most efficient routing.
3- use the cars nav system for navigation via the waypoints given by ABRP (use the multi waypoint option in the nav system)
Good luck, enjoy the weather