Apple Releases macOS 10.13.3 Supplemental Update With Telugu Crash Fix - MacRumors
Skip to Content

Apple Releases macOS 10.13.3 Supplemental Update With Telugu Crash Fix

by

Apple today released a new version of macOS High Sierra 10.13.3, which comes approximately one month after the first version of macOS High Sierra 10.13.3, an update that offered fixes for the Meltdown and Spectre vulnerabilities discovered in early January.

The new macOS High Sierra update can be downloaded directly from the Mac App Store or through the Software Update function in the Mac App Store on all compatible Macs that are already running macOS High Sierra.

macOS High Sierra
Today's update addresses a bug that causes apps like Messages to crash due to an inability to render a character in the Indian language Telugu. When sent or received, the character in question can cause an app like Messages or Safari to freeze up and become unresponsive.

There's also a separate macOS High Sierra 10.13.13 Supplemental Update for iMac Pros, which is designed to fix the Telugu bug on those machines.

Prior to today's update, the only fix in an app like Messages was to delete the entire conversation containing the buggy character. The update also impacted iOS 11.2.5, and Apple also released a new iOS 11.2.6 update to fix it.

Apple previously addressed the Telugu character bug in iOS 11.3 and macOS 10.13.4, but those updates are still in beta testing and won't be released until the spring. Apple last week promised a minor update to fix the bugs in the meantime.

Update: Apple released a second supplementary update for the iMac Pro in late February as iMac Pro users were not able to install the update.

Related Forum: macOS High Sierra

Top Rated Comments

112 months ago
I can imagine that fix will take some time, even if it's high priority.
Yep, Apple already had everyone switched back over to work on animoji AR for the next iOS release.
Score: 9 Votes (Like | Disagree)
Populus Avatar
112 months ago
I can imagine that fix will take some time, even if it's high priority.
i just hope APFS will be polished enough with the launch of 10.14, because as you said, the file system is a high priority part of the operating system.

It would be nice to have it well optimized for mechanical hard drives and fusion drives as well.
Score: 5 Votes (Like | Disagree)
springsup Avatar
112 months ago
I can imagine that fix will take some time, even if it's high priority.
Probably not; as I mentioned in the dedicated thread on that topic, it's a silent error which should be a loud error. Not to trivialise the issue, but as potential filesystem bugs go, that's a breeze.

i just hope APFS will be polished enough with the launch of 10.14, because as you said, the file system is a high priority part of the operating system.

It would be nice to have it well optimized for mechanical hard drives and fusion drives as well.
I think you are overplaying a single, minor bug. APFS is fine - there are hundreds of millions of people who have been using APFS for their critical data-storage needs for about a year, and we're not hearing about widespread data-corruption or anything.

The one thing I have noticed, is that these minor bugs are getting much more publicity than they used to. I don't think Apple's software has gotten worse overall; there are always better and less-excellent releases of any software. It's just that every minor bug appears to be an urgent catastrophe for some people. You have never used a piece of software with no bugs, I promise.
Score: 4 Votes (Like | Disagree)
112 months ago
High Sierra has been the literal worst software experience I've had with Apple by far.

Messages ARE still out of order and has persisted for months! WTF
Score: 4 Votes (Like | Disagree)
shuttersny Avatar
112 months ago
Over two hours now and the update still hasn't finished installing. WTF?
This was pretty much my experieince
I did a forced restart
Restored machine from weekly clone and automatic hourly Time Machine backups
I won't go near this supplemental update till I see some remedy
I've used Macs since 1983
Do regular "maintenance"
First "update" that I had any issue with
Does this say something?
Score: 2 Votes (Like | Disagree)
112 months ago
Score: 2 Votes (Like | Disagree)

Popular Stories

iOS 27 Next to iPhone

Here's When iOS 27 Rolls Out Today in Every Time Zone

Sunday September 13, 2026 3:00 am PDT by
Apple is about to release iOS 27, which will finally deliver more advanced Siri AI capabilities as well as a variety of other refinements, improvements, and new features to iPhones. It's Apple's biggest software update of the year, and Apple announced at Wednesday's iPhone event that it will be releasing iOS 27 sometime today – Monday, September 14. iOS 27 won't be the only release today,...
deep black iphone 18 pro

Apple Says iPhone 18 Pro Max Sold in U.S. Differs in One Way

Saturday September 12, 2026 3:27 pm PDT by
As noted by Nicolas Lellouche, who writes for the French tech website Numerama, Apple has updated its tech specs pages for the iPhone 18 Pro and iPhone 18 Pro Max to clarify which models are equipped with its new C2 cellular modem and where. Apple now says the iPhone 18 Pro has a C2 modem worldwide, while the iPhone 18 Pro Max uses the chip in every country except for the U.S. According...
iphone duo

IMAX Reacts to iPhone Duo's 1:1.4 Aspect Ratio Displays

Friday September 11, 2026 4:42 am PDT by
Production theater company IMAX has responded in a mixed way to Apple's embrace of a 1:1.4 aspect ratio on the iPhone Duo's inner and outer displays. The boxier ratio happens to be very close to the classic "full-frame" IMAX 1.43:1 aspect ratio, which comes from the geometry of the company's original 15-perforation/70mm film system. In response to an X post from someone wondering if we'll see...