Facing issues of slow updates via terminal in Kali Linux 2020.1 and above, well you’re not the only one, there are few or perhaps many cases in the wild and after some research I’ve landed onto this solution. Perhaps not the best in the world but makes complete sense and works most importantly. The issue faced is due to a lot of hits on the mirrors out there and the official repo might be slow at the time of updating or upgrading your kali distro for you. So here is the solution:
replace it on
/etc/apt/sources.list such as this one below:
deb http://kali.cs.nctu.edu.tw/kali kali-rolling main contrib non-free
# For source package access, uncomment the following line
# deb-src http://kali.cs.nctu.edu.tw/kali kali-rolling main contrib non-free
Also for a good reason, you should not add any additional repositories as it may break your Kali Linux unless you really know how to fix that.
For me it looks something like this.
Happy Upgrading and good bye to slow updates.