Apple Seeds Sixth Beta of macOS High Sierra 10.13.3 to Developers and Public Beta Testers [Updated]

The last update likely bricked my iMac 2011... grey screen of death for everything even Time Machine... I have possibly lost years of data despite backups (hardware check all clear no issues) and Apple will lose a customer.

Why install a beta on your main machine with years of data on it, sounds not so smart

Not this bata, the last approved update that was issued bricked it. I don’t know how to fix it
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I never installed bata??? It’s the last update that did this ... are you suggesting I ended up with a bata version because I am not enrolled in any program.

You are commenting in the thread for beta software release, hence everyone assumes you are running a beta version of the operating system on a production machine, which is why you are not getting any sympathy.

Have you tried any of the following:

SMC reset: https://support.apple.com/en-gb/HT201295

NVRAM reset: https://support.apple.com/en-gb/HT204063

try to start in Safe mode: https://support.apple.com/en-gb/HT201262

Disconnect all external devices such as hard drives, DVD drives, card readers, even USB keyboard and mouse and then try to start the machine. this test is to eliminate the possibility of a faulty device preventing the computer from booting.

Use another mac to install a fresh copy of Sierra onto an external USB hard drive. Connect this hard drive to your Mac press and hold OPTION key during boot to bring up the start up manager https://support.apple.com/en-gb/HT202796, then boot from the USB disk and use disk utility to try to repair your internal disk.

The last update likely bricked my iMac 2011... grey screen of death for everything even Time Machine... I have possibly lost years of data despite backups (hardware check all clear no issues) and Apple will lose a customer.

It is beta software, it specifically says do not run it on a production machine. You agreed to the terms and conditions when enrolling in the beta program.

https://beta.apple.com/sp/betaprogram/faq

"Install the beta software only on non-production devices that are not business critical. We strongly recommend installing on a secondary system or device, or on a secondary partition on your Mac."

Thanks for responding

To clarify some posters in here I did not update with this beta version - I was referencing the last public version that bricked my Mac and grumbling about it. I guess I shouldn’t have posted in this thread.

Nearest Mac store is 3 hours away. I haven’t tried boot off external yet. None of my friends own Macs to download the installer (should I try High Sierra or downgrade to Sierra) time machine loads but gives me grey screen too.

There is a Apple certified repair store in my small town - my last resort I guess.

My biggest fear is the thousands of photos on my Mac backed up on iCloud. But if I wipe that drive, I lose my iCloud connection and photos too?

If your photos are on iCloud via iCloud Photo Library then they are safe regardless of anything that would happen to your Mac or it’s drives.

I suggest you try booting to internet recovery (hold command+option+r). This will boot your Mac to a recovery partition that is downloaded from Apple servers rather than the one that is locally available on your Mac. If internet recovery does not successfully get you booted up, it is likely at that point that you have a firmware issue or a hardware issue - if that’s the case you will certainly need Apple or an authorized service center to get you back up. The chances of your Mac being permanently broken, especially as the result of a software update, is next to zero. PM me if you want any more help.

No, you obviously are too young to remember how the beta process was. :D

No, you utterly misunderstand how the beta process works. Perhaps beta builds were not always publicly available, but Apple certainly has not ever just written up one or two versions of a system update and released it.

No, you obviously are too young to remember how the beta process was. :D

Simply further confirmation of the observation I made.