Solved: Downgrading to or fresh install older version of HASS.IO

I am having the same problem using this command:
hassio ha update --version=0.87.1

It used to be hassio ha update -o v=0.87.1 or whatever version you want. Perhaps try that. The —version is possible for later versions of HA.

Thanks, but it also did not work, see:

core-ssh:~# hassio ha update -o v=0.88.0
Error: unknown shorthand flag: ‘o’ in -o
Usage:
hassio homeassistant update [flags]

Aliases:
update, up

Flags:
-h, --help help for update
–version string Version to update to

Global Flags:
–api-token string Hass.io API token
–config string config file (default is $HOME/.homeassistant.yaml)
–endpoint string Endpoint for Hass.io Supervisor ( default is ‘hassio’ )
–log-level string Log level defaults to Warn
–raw-json Output raw JSON from the API

FATA[0000] Error while executing rootCmd: unknown shorthand flag: ‘o’ in -o

Searching a little more I found this one here and the command was accepted:

hassio homeassistant update --version=0.88.0

System log:
19-06-08 14:33:35 INFO (MainThread) [hassio.tasks] All core tasks are scheduled
19-06-08 14:33:35 INFO (MainThread) [hassio.core] Hass.io is up and running
19-06-08 14:48:37 INFO (MainThread) [hassio.api.security] /homeassistant/update access from core_ssh
19-06-08 14:48:37 INFO (MainThread) [hassio.homeassistant] Update Home Assistant to version 0.88.0
19-06-08 14:48:37 INFO (SyncWorker_12) [hassio.docker.interface] Update image homeassistant/raspberrypi3-homeassistant:0.87.1 to homeassistant/raspberrypi3-homeassistant:0.88.0
19-06-08 14:48:37 INFO (SyncWorker_12) [hassio.docker.interface] Pull image homeassistant/raspberrypi3-homeassistant tag 0.88.0.
19-06-08 15:02:47 INFO (SyncWorker_12) [hassio.docker.interface] Tag image homeassistant/raspberrypi3-homeassistant with version 0.88.0 as latest
19-06-08 15:02:48 INFO (SyncWorker_12) [hassio.docker.interface] Stop homeassistant application
19-06-08 15:03:00 INFO (SyncWorker_12) [hassio.docker.interface] Clean homeassistant application
19-06-08 15:03:00 INFO (SyncWorker_12) [hassio.docker.interface] Cleanup images: [‘homeassistant/raspberrypi3-homeassistant:0.87.1’]
19-06-08 15:03:46 INFO (SyncWorker_9) [hassio.docker.homeassistant] Start homeassistant homeassistant/raspberrypi3-homeassistant with version 0.88.0
19-06-08 15:04:47 INFO (MainThread) [hassio.homeassistant] Detect a running Home Assistant instance
19-06-08 15:04:47 INFO (MainThread) [hassio.homeassistant] Successful run Home Assistant 0.88.0

Appreciate your attention !