Wizard should be checking if updater is running when it's starting it
Wizard on every renewal of step 6 page start updater process as it seems if it doesn't sees state file. But when updater is recovering (opkg-trans) then it doesn't create it (we have no idea that it's needed). So wizard start new updater.sh process that fails with error that updater can't lock state because another process is already running. So instead of checking state file we should check updater lock.