See the first screenshot: "failed to install due to an unknown error".
Never mind, after manually uninstalling 0.8.0, 0.8.1 installed just fine. Thanks!
Yes, 0.8.0 was installed from fdroid.
ZEUS v0.8.1 is now available.
* Standalone Point of Sale w/ inventory management
* Nostr contact import
* Persistent LND [Android only]
* Node/account reordering
* Improved expiry display
* LND v0.17.3
## Links
Blog post: https://blog.zeusln.com/new-release-zeus-v0-8-1/
Release notes: https://github.com/ZeusLN/zeus/releases/tag/v0.8.1
ZEUS documentation: https://docs.zeusln.app/
Embedded node FAQ: https://docs.zeusln.app/for-users/embedded-node/faq
Fee structure: https://docs.zeusln.app/lsp/fees
Android
Universal APK: https://zeusln.com/zeus-v0.8.1-universal.apk
arm64-v8a APK: https://zeusln.com/zeus-v0.8.1-arm64-v8a.apk
Manifest: https://zeusln.com/manifest-v0.8.1.txt
Manifest Signature: https://zeusln.com/manifest-v0.8.1.txt.sig
F-Droid https://zeusln.com/download
Google Play https://play.google.com/store/apps/details?id=app.zeusln.zeus
iOS
IPA: https://zeusln.com/zeus-v0.8.1.ipa
Apple App Store: https://apps.apple.com/us/app/zeus-wallet/id1456038895 
Can't update from 0.8.0 to 0.8.1 from the fdroid repo on LineageOS 20 armv8:
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