How to reliably update Guix

[Youni Git]

Hello, Guix Help!

Much time long I run 'guix pull' and 'guix package -u' and get errors due to 
bad connection or so.

Usual user gets TLS error, root user gets repeating 0% of downloading.

Could you please, advise what to type to my config for get pull and upgrade 
work better?

Here it is my config: 
https://gitgud.io/youni/guix-configs/-/blob/master/config-wpa2-wlp5-wf-blacklist--my-desktop-services--isp.conf



$ guix pull

Computing Guix derivation for 'x86_64-linux'... \
substitute: updating substitutes from 'https://ci.guix.gnu.org'...   0.0%
substitute: updating substitutes from 'https://bordeaux.guix.gnu.org'...   
0.0%guix substitute: error: TLS error in procedure 
'read_from_session_record_port': Error in the pull function.
guix pull: error: 
`/gnu/store/x67pnr0phafsbmd09vj6iybh4yls28rm-guix-1.3.0-5.6243ad3/bin/guix 
substitute' died unexpectedly


# guix pull

...
192.8 MB will be downloaded
substitute: updating substitutes from 'https://ci.guix.gnu.org'...   0.0%
substitute: updating substitutes from 'https://ci.guix.gnu.org'...   0.0%
substitute: updating substitutes from 'https://ci.guix.gnu.org'...   0.0%
substitute: updating substitutes from 'https://ci.guix.gnu.org'...   0.0%
...
substitute: updating substitutes from 'https://ci.guix.gnu.org'...   0.0%
substitute: updating substitutes from 'https://ci.guix.gnu.org'...   0.0%
substitute: updating substitutes from 'https://ci.guix.gnu.org'...   0.0%
substitute: updating substitutes from 'https://ci.guix.gnu.org'...   0.0%