AT&T outage caused by software update, company says.....(So....not solar flashes? Kek )
(media.greatawakening.win)
🏳️ FALSE FLAG TESTING
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The requirement was to implement the update. Resorting to a backup copy does not fix the problem. The problem was evidently in the realm of compatibility between AT&T and other carriers. That may have been on a case by case basis (confirming system settings, etc.). Ever had to fix software in real time? I think they did a great job, considering they were probably not anticipating this problem.
Basically dealt with firmware updates, I’ve had to update systems with complete updates as well as fixes, also have had to reload customers operating systems. Large system customers normally work on a development server before committing changes to a production server.
THIS. Software is tested in a 'Stage' lower tier environment before being authorized to go into the Production environment.
You can't "test" operational interfaces until you attempt to interoperate. Do all the testing you want, but the phone system only works when you can dial up someone and they answer.
Last Known Good is usually in memory to flip back if the new version fails.
You don't know that the "new version failed." It looks more like incompatibility at the system interface level, remediable within hours (as happened). Flipping back to the Last Known Good may not be an answer in the larger scheme of things. Boeing had to fix the problem with the 737 MAX. It couldn't just throw up their hands and fall back on the production of 737 NG models; the NG couldn't address the market that the MAX was designed to compete in.
Great analogy.