Out of space error indicates you need to expand the filesystem to use the whole sdcard.
Go to the system tab and scroll to the 'Expand Filesystem' option, select and save...the filesystem will be expanded and you will be asked to reboot.
Once that's done you should have no problems upgrading.
However, normally an upgrade can work on an unexpanded filesystem unless you have added other files such as music to the sdcard. Any such additions will be lost on upgrade. If you have music there you may want to copy it off to a backup.
.. from your posted output, note the root size and status..
Root size = 3.4G
Root used = 89%
Root available = 381M
Root expand = not expanded
Go to the system tab and scroll to the 'Expand Filesystem' option, select and save...the filesystem will be expanded and you will be asked to reboot.
Once that's done you should have no problems upgrading.
However, normally an upgrade can work on an unexpanded filesystem unless you have added other files such as music to the sdcard. Any such additions will be lost on upgrade. If you have music there you may want to copy it off to a backup.
.. from your posted output, note the root size and status..
Root size = 3.4G
Root used = 89%
Root available = 381M
Root expand = not expanded
----------
bob
bob