You may try run the terminal command to update:

sudo apt update && sudo apt dist-upgrade

sudo apt update then

sudo apt dist-upgrade

Very Helpful , deepin流云 , Thank you !

deepin流云 - Huge thanks! I'll try this out. But...

"sumary.sig" - what's a file is that essentially?! Could you please explain. 🙂 And why my system "Deepin 25.0.10" couldn't find it, and upgrade through the convenient command *sudo deepin-immutable-ctl upgrade?

Thank you for your time!

I'd like to know what "summary.sig" is. What issue did you encounter during the update? Please provide a screenshot so I can better assist you. Also, the command sudo deepin-immutable-ctl upgrade has been deprecated. To update the system, we still recommend using the command I provided earlier.

First of all, I appreciate your help, I really do.

Regrettably the command "sudo apt update && sudo apt dist-upgrade" doesn't work for me. 🙂 When I use "sudo apt update", I just get a bunch of connection errors (as seen on the screenshot below).

And using "sudo apt dist-upgrade" aftewards brings no changes at all. :) It says "0 packages to upgrade..." and so on. The system won't even try to upgrade.

By the way, my internet connnection is OK. However there is not any sub-folder named "Driver-25" in the folder "https://community-packages.deepin.com".

Well, actually the IP you blurred out is the IP address of our update server. That IP is what can help us locate the problem, since you're currently unable to connect to the update server. We need to see where that IP is connecting to.

Oh I'm so sorry, shouldn't blur the IP. 🙁 A stupid thing it was, and I did it spontaneously, without rhyme or reason. There below is the full screenshot:

I found that IPv6 still doesn’t work properly, especially in my European region, so please disable it in Deepin Linux under network settings and test again. Just a moment ago, I couldn’t log in to bbs.deepin.org with my WeChat account, regardless of the browser (I’m currently “working” on my second computer) — disabling IPv6 fixed the issue. Sometimes it works and sometimes it doesn’t; for the life of me, I can’t imagine where the bug in Deepin could be. I think it’s more likely an ISP issue, since my router (Huawei) also supports IPv6. Try disabling it on your currently active network connection and give it another try.

Sorry, my Deepin is setup to german.

Thank you for the brilliant advice! 👍 It doesn't help to upgrade the system though — I'm still facing the same issues in the console. But now I can open the "Application Center"! A very nice and neat App to be shure. However it's not able to upgrade the whole system per se.

Now I strongly suspect something is deeply wrong with my /etc/apt/sources.list file. It looks like:

Generated by deepin installer deb https://community-packages.deepin.com/beige/ crimson main commercial community #deb-src https://community-packages.deepin.com/beige/ crimson main commercial community

And I just feel something is wrong there. For example, when I open the link on the web, there is no any folder named "crimson" or "main" or "community". There are only two folders by the names "dists" and "pool"