Mr. Macintosh
mrmacintosh.com · Personal blog · on HN since 2019
Mr. Macintosh tracks macOS updates, release builds, download links and bugs, with posts on kernel panics and problem updates.
What HN saysHN links it for macOS update details and fixes; one commenter reports a kernel panic fixed by an update, another doubts tech article quality.
27HN people shared it
17linked it in comments
21stories submitted
525story points
7 months agolast shared
2019people per year2026
Most-shared posts
- 1Google Chrome Keystone is modifying /var symlink on non SIP Macs causing k-panic6 people · 462 points · first shared 2019 · 300 comments on HN
- 210 15 4 update wake from sleep kernel panic in 16 mbpro 20193 people · first shared 2020
- 3macOS Mojave 2020-005 Security Update is causing major issues for some users2 people · 4 points · first shared 2020 · discussion on HN
- 4Big Sur Upgrade not Enough Free Space = Serious Issue & Possible Data Loss2 people · 4 points · first shared 2021 · 1 comments on HN
- 5Apple silicon m1 full macos restore ipsw firmware files database2 people · first shared 2023
- 6New Mojave Supplemental Update released that fixes issues caused by older update1 people · 23 points · first shared 2020 · 17 comments on HN
- 7Big Sur 11.0.1 (20B50) Released to Block Install for 2013-14 13″ MacBook Pros1 people · 4 points · first shared 2020 · discussion on HN
- 8macOS Catalina 10.15.5 Supplemental Update (19F101) Addresses Kernel Exploit1 people · 3 points · first shared 2020 · 1 comments on HN
- 9How to Enable the Mac Startup Chime on Your 2016 MacBook Pro1 people · 3 points · first shared 2020 · discussion on HN
- 10macOS update breaks video conferencing when most people are working from home1 people · 3 points · first shared 2020 · discussion on HN
- 11Catalina 10.15.7 Supplemental Update Addresses 3 Exploits, 1 found in the wild!1 people · 3 points · first shared 2020 · discussion on HN
- 12Catalina 10.15.6 Supplemental Update. Fix for virtualization memory leak issues1 people · 2 points · first shared 2020 · discussion on HN
- 13Big Sur Internet Recovery Unavailable Replaced with Catalina1 people · 2 points · first shared 2021 · discussion on HN
- 14Can I Upgrade or Downgrade macOS? Every Mac from 2006-20201 people · 2 points · first shared 2020 · discussion on HN
- 15macOS Big Sur 11.0 – Updated index of need to know changes links1 people · 2 points · first shared 2020 · discussion on HN
What HN people wrote when they linked it
ProllyInfamous · 2026-03-26
I have used and owned Apple products since 1992.
Absolutely agreed about the gatekeeping — just as example, you cannot even update your MacOS without being online unless you create a full USB Installer.
For your particular situation, presuming your hardware supports it, you can use MrMacintosh guides [0] to downgrade your OS from Tahoe — I recommend the latest Sequoia installer — all officially downloaded via Apple links.
[0] <http://www.mrmacintosh.com>
I further recommend blocking .apple.com & .icloud.com (and many more hosts) using a PiHole (so simple, so necessary).
ehsanullahjan · 2020-05-27
My MacBook Pro (16-inch, 2019) was having kernel panics multiple times a day after having been asleep for extend periods. This was extremely annoying, as you can imagine. I’m happy to report that the Catalina 10.15.5 update fixes the kernel panics for me.
The issue I experienced has been well documented [here](https://mrmacintosh.com/10-15-4-update-wake-from-sleep-kernel-panic-in… and elsewhere on the web.
I use my MacBook Pro (16-inch, 2019) with a CalDigit TS3 Plus Dock and LG 32” 4K monitor. It’s worth noting that using the computer undocked never gave me any problems.
MrMacintoshBlog · 2020-05-26
Today, Apple released the following updates
macOS Catalina 10.15.5 Update
Security Update for Mojave 2020-003
Security Update for High Sierra 2020-003
Patch & Security information, Download Links, Version info + size for BridgeOS, Combo, Delta, Full Installer app included in the links below!
https://mrmacintosh.com/whats-new-in-the-macos-catalina-10-15-5-update…
usui · 2021-11-02
Honestly I think the scarier part is that "real" tech articles are rapidly approaching this level of quality and I can't tell if the "real" articles are being written by automation, or people who love to copy and paste. It's getting that bad. Modern tech journalism is just so vapid and devoid of any content, so even the parent post was more fun to read than the regular.
For an example, tech-based articles I loathe sifting through online are about anything related to recent events like a macOS update. Google Search: "macos big sur release notes" https://imgur.com/a/fmhyk6d
Imagine going to the first Apple link, not getting any details, and then moving onto the 3rd and 4th links hoping that some internet journalist broke down the details for you because the title includes "What's New?". Nope. The links all just resort to barely-updated articles that basically say "11.6.1 got released". Amazing, thank you tech journalists!
At least an article about iframes might give some boring facts to help crunch in your mind while your eyes glaze through.
3rd and 4th links:
- https://mrmacintosh.com/macos-big-sur-11-6-1-update-whats-new/
- https://www.macworld.com/article/234324/macos-big-sur-faq.html
unsnap_biceps · 2025-09-15
The Tahoe beach pictures are pretty nice.
https://mrmacintosh.com/download-the-new-macos-tahoe-wallpaper-desktop… has them at the bottom of the link
plorkyeran · 2023-06-04
You download them from Apple. https://mesu.apple.com/assets/macos/com_apple_macOSIPSW/com_apple_macO… is the canonical updater data source. https://mrmacintosh.com/apple-silicon-m1-full-macos-restore-ipsw-firmw… is that in HTML form, and there's various tools like https://github.com/munki/macadmin-scripts/blob/main/getmacosipsws.py for automating it.
claudeganon · 2020-11-16
And requires that you disable system integrity protection, which opens you up to other threats as well as bugs that can prevent you from being able to boot at all:
https://mrmacintosh.com/google-chrome-keystone-is-modifying-var-symlin…
IshKebab · 2020-10-17
This sounds like possibly a variant of this ridiculous issue.
https://mrmacintosh.com/10-15-4-update-wake-from-sleep-kernel-panic-in…
I've set my Mac to never sleep when plugged in. Disappointing.
SigmundA · 2020-05-12
Not real impressed with Apple Mac OS stability lately. I am currently experiencing the WindowServer crash coming out of sleep on my MacBook Pro 16.
Look like it has something to do with the AMD dGPU and Catalina so again probably a GPU driver: https://mrmacintosh.com/10-15-4-update-wake-from-sleep-kernel-panic-in…
Then you have another fun one probably related like it spinning up the fans and the GPU consuming double power when you run the built in display and an external monitor, but not with just external monitors: https://forums.macrumors.com/threads/16-is-hot-noisy-with-an-external-…
Of course the problem with Apple is zero communication even acknowledging an issue leads to all sorts of wild goose chases usually involving reset pram or whatever.
bangonkeyboard · 2020-04-12
Here is one procedure for possibly recovering an affected Mac which cannot boot: https://mrmacintosh.com/how-to-restore-bridgeos-on-a-t2-mac-how-to-put…
It requires a separate, recent Mac, involves arcane combinations of specific ports, keys, and timings, relies on luck and voodoo, and ultimately may not even work.
matwood · 2019-10-10
I can appreciate your problem, but SIP on whole is a good thing along with mounting system directories as read only. It's the only thing that prevented many machines from having to be reinstalled recently.
https://mrmacintosh.com/google-chrome-keystone-is-modifying-var-symlin…
kjhughes · 2019-09-26
The Mr Macintosh blog (which the Arstechnica piece cites) has more technical details:
https://mrmacintosh.com/google-chrome-keystone-is-modifying-var-symlin…
theclaw · 2019-09-24
It now looks as though it might be Google Chrome. Whoooops.
https://mrmacintosh.com/google-chrome-keystone-is-modifying-var-symlin…
e: hn discussion here: https://news.ycombinator.com/item?id=21064663
batmanthehorse · 2019-09-24
This site says Chrome Updater is the cause of the problem: https://mrmacintosh.com/google-chrome-keystone-is-modifying-var-symlin…
It only happens on Macs with SIP disabled, which includes a lot of Mac Pros with Avid (for third-party video card support)
Hadarai5 · 2026-04-03
I faced the same issue! Here's copy-paste from my comment on Reddit
Macbook Pro 16' M2 Max 64/1TB
Just solved the problem by reviving to MacOS 26.3.1 .ipsw file.
Linkes I used:
https://support.apple.com/en-us/108900 (official guide to get to DFU)
https://mrmacintosh.com/restore-macos-firmware-on-an-apple-silicon-mac… (mr macintosh guide to do the same)
https://mrmacintosh.com/apple-silicon-m1-full-macos-restore-ipsw-firmw… (mr Macintosh links to .ipsw files, including 26.3.1 image)
Steps I took:
Connect to Macbook to mac mini M1 via USB-C 3.1 gen1 cable (to right port)
use script from Asahi to get into DFU https://github.com/AsahiLinux/macvdmtool
Then drag and drop MacOS 26.3.1 .ipsw file downloaded from mrmacintosh (link 3).
Accept "restore" (didn't try revive, might work?)
Wait + get apple logo on bricked Macbook
My story started with Apple authorized service who wanted to replace logic board for 1000$.
niftylettuce · 2021-01-10
tldr; I got a Macbook Pro M1 for $975 in mint-condition at a Best Buy and already put the return label on it.
While Geekbench showed great results, actual usage of the machine and headaches ensued were contrasting.
To put it bluntly - M1 machines are currently unstable. There are numerous Bluetooth issues [1], formatting issues [2], Wifi 6 issues [3], VPN issues [4], firewall issues [5], and shocking security issues in general with Big Sur and Apple's silicon [6].
I'm a power user and this is way too experimental for actual use. At the least get the 16 GB variant if you want to get anything done and not experience freeze/lockup (but for that much money you're better off with Librem 14" or System76 w/AMD Threadripper).
[1]: https://www.reddit.com/r/mac/comments/kpu2hy/mouse_lag_when_using_blue…
[2]: https://mrmacintosh.com/reinstalling-big-sur-on-apple-silicon-macs-wit…
[3]: https://www.reddit.com/r/mac/comments/jy3yc7/is_anyone_else_experienci…
[4]: https://mullvad.net/en/blog/2020/11/16/big-no-big-sur-mullvad-disallow…
[5]: https://github.com/objective-see/LuLu/issues/208
[6]: https://sneak.berlin/20201204/on-trusting-macintosh-hardware/