How to downgrade to 10.13.3?

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Level 1

61 points

How to downgrade to 10.13.3?

Ever since the upgrade to 10.13.4, my iMac (late 2017, 24GB of RAM) has been *incredibly* unstable, where the OS decides that it's out of memory (even though only about 5GB are in use by any processes) and Activity Monitor shows all 24GB used. Sometimes the "you are running low on application memory" window comes up but usually the whole system freezes entirely and I have to physically reset it.

Anyway, this wasn't happening before 10.13.4, so is there a way to downgrade back to 10.13.3 to see if that's what's causing it?

iMac (Retina 5K, 27-inch, 2017), macOS High Sierra (10.13.4), 24GB RAM

Posted on Apr 21, 2018 10:04 PM

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Answer 1

Best reply

Eau Rouge

Level 8

42,554 points

Apr 21, 2018 11:58 PM in response to fluffy

You have a lot of items in your login items, do you really need all these apps to open when your mac starts up. If you don't need some of them at log in then go to System Preferences> Users & Groups> Login Items, highlight the app(s) you want to remove and press the minus button.

Check also that your third party apps have the latest software available, you have many that are causing the kernel panics, so give them a check. also check that any hardware you use with your Mac has the latest drivers for High Sierra.

It might also be useful to download and then install the 10.13.4 Combo update, if you haven't already done so.

Download macOS High Sierra 10.13.4 Combo Update

It resets some system files and caches that may have become corrupt over time.

I see you removed iDisplay and that has helped.

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Answer 2

Eau Rouge

Level 8

42,554 points

Apr 21, 2018 11:03 PM in response to fluffy

Why don't you run etrecheck again and post the report back here, that is the point of it.

Also if you are determined to roll back to 10.13.3, then make a note of all the work you have done since you updated to 10.13.4 and store all your new and updated files etc in a folder on another drive or USB. You could then go back to 10.13.3 and copy over these newer files.

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Answer 3

fluffy Author

Level 1

61 points

Apr 21, 2018 11:10 PM in response to Eau Rouge

EtreCheck version: 4.2.1 (4C020)

Report generated: 2018-04-21 22:12:32

Download EtreCheck from https://etrecheck.com

Runtime: 3:25

Performance: Good

Problem: Other problem

Major Issues:

Anything that appears on this list needs immediate attention.

Kernel panics - This system has experienced kernel panics. This could be a sign of hardware failure.

Minor Issues:

These issues do not need immediate attention but they may indicate future problems.

Apps crashing - There have been numerous app crashes.

Unsigned files - There is unsigned software installed. They appear to be legitimate but should be reviewed.

32-bit Apps - This machine has 32-bits apps that may have problems in the future.

Hardware Information:

iMac (Retina 5K, 27-inch, 2017)

iMac Model: iMac18,3

1 3.8 GHz Intel Core i5 (i5-7600K) CPU: 4-core

24 GB RAM Upgradeable

BANK 0/DIMM0 - 4 GB DDR4 2400 ok

BANK 0/DIMM1 - 8 GB DDR4 2400 ok

BANK 1/DIMM0 - 4 GB DDR4 2400 ok

BANK 1/DIMM1 - 8 GB DDR4 2400 ok

Video Information:

Radeon Pro 580 - VRAM: 8192 MB

iMac

Drives:

disk0 - APPLE SSD SM0128L 121.33 GB (Solid State - TRIM: Yes)

Internal PCI-Express 8.0 GT/s x4 NVM Express

disk0s1 - EFI () [EFI] 315 MB

disk0s2 () [Core Storage Container] 120.88 GB

disk2 - Macintosh HD (Journaled HFS+) [Fusion Drive] 2.11 TB

disk0s3 - B*******X () [Recovery] 134 MB

disk1 - APPLE HDD ST2000DM001 2.00 TB (Mechanical)

Internal SATA 6 Gigabit Serial ATA

disk1s1 - EFI (MS-DOS FAT32) [EFI] 210 MB

disk1s2 () [Core Storage Container] 2.00 TB

disk2 - Macintosh HD (Journaled HFS+) [Fusion Drive] 2.11 TB

disk1s3 - Recovery HD (Journaled HFS+) [Recovery] 650 MB

disk3 - asmedia ASMT1051 1.00 TB

External USB 5 Gbit/s

disk3s1 - EFI (MS-DOS FAT32) [EFI] 210 MB

disk3s2 () 1000.00 GB

disk4s1 - p***t (APFS) 1000.00 GB (900.62 GB used)

Mounted Volumes:

disk2 - Macintosh HD [Fusion Drive] 2.11 TB (1.36 TB free)

Journaled HFS+

Mount point: /

disk4s1 - p***t 1000.00 GB (99.17 GB free)

APFS

Mount point: /Volumes/p***t

disk5s2 - T******************s 4.29 TB (3.02 TB free)

Case-Sensitive Journaled HFS+

Mount point: /Volumes/T******************s

Network:

Interface usbmodem146410: MT65xx Preloader

Interface en0: Ethernet

One IPv4 address

2 IPv6 addresses

Interface en6: iPad

Interface en5: iPhone

Interface fw0: Thunderbolt FireWire

Interface en1: Wi-Fi

802.11 a/b/g/n/ac

One IPv4 address

2 IPv6 addresses

Interface en4: Bluetooth PAN

Interface bridge0: Thunderbolt Bridge

iCloud Quota: 3.83 GB available

System Software:

macOS High Sierra 10.13.4 (17E199)

Time since boot: Less than an hour

System Load: 2.26 (1 min ago) 3.06 (5 min ago) 3.20 (15 min ago)

Security:

System	Status
Gatekeeper	Mac App Store and identified developers
System Integrity Protection	Enabled

Unsigned Files:

Launchd: /Library/LaunchDaemons/org.virtualbox.startup.plist

Executable: /Library/Application Support/VirtualBox/LaunchDaemons/VirtualBoxStartup.sh restart