no, it just means that you have not found the correct combination of steps to get it updated.
saying that it works for others is good info. it means that the problem does not lie with phpbb but rather with either your methods or your particular server settings.
I suggest that you create a copy of your board either on your server or on your computer at home. then try the update again using the correct procedures.
I am available for custom work on a donation basis. Please send me a PM with your needs.
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OK, so what's the speed of dark?