Is Etcher available in 21.04 yet.
In 20.04 LTS I had to add an additional DNS [8.8.8.8 or 1.1.1.1]- used 8.8.8.8
Added 8.8.8.8 to 21.04 apparently successfully but the loader in Boutique tried to download 2 copies of Etcher, one marked 'idle'.
The faulty, failed download is 'remembered and I don't know how to flush it without reloading 21.04.
In an up-tp-date 20.04.2 LTS, updating with sudo apt-get update I also got an error on Etcher.
ray@rayLinux2020:~$ sudo apt-get update
[sudo] password for ray:
Get:1 http://za.archive.ubuntu.com/ubuntu focal InRelease [265 kB]
Get:2 http://security.ubuntu.com/ubuntu focal-security InRelease [109 kB]
Hit:3 http://ppa.launchpad.net/heyarje/makemkv-beta/ubuntu focal InRelease
Hit:4 https://repo.skype.com/deb stable InRelease
Hit:5 https://linux.teamviewer.com/deb stable InRelease
Hit:6 http://ppa.launchpad.net/lah7/ubuntu-mate-colours/ubuntu focal InRelease
Hit:8 http://ppa.launchpad.net/qbittorrent-team/qbittorrent-stable/ubuntu focal InRelease
Get:9 http://za.archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
Get:10 http://za.archive.ubuntu.com/ubuntu focal-backports InRelease [101 kB]
Err:7 https://dl.bintray.com/etcher/debian stable InRelease
403 Forbidden [IP: 3.125.168.216 443]
Get:11 http://za.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [953 kB]
Get:12 http://za.archive.ubuntu.com/ubuntu focal-updates/main i386 Packages [465 kB]
Get:13 http://za.archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages [765 kB]
Reading package lists... Done
E: Failed to fetch https://deb.etcher.io/dists/stable/InRelease 403 Forbidden [IP: 3.125.168.216 443]
E: The repository 'https://deb.etcher.io stable InRelease' is no longer signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
ray@rayLinux2020:~$
Is Ether working in 20.10
Please help