Hi @marc,
Thank you very much for an update.
Yes, you are right that we have software brokers!
Now we can proceed furher. 
One more quick question.
Is there any best practice to recover from corrupted environment when upgrade script fails?
For example, we have to run the script again with older version tar ball for downgrading? or there’s something where we can save as a backup for such unexpected upgrade results?
Regards,
Kia