Apple Releases Thunderbolt Software Update 1.2.1 - MacRumors
Skip to Content

Apple Releases Thunderbolt Software Update 1.2.1

by

Macbookpro
Apple has released an update to all Macs with Thunderbolt ports, adding support for the new Thunderbolt to Gigabit Ethernet Adapter. The update weighs in at 520KB and requires OS X Lion 10.7.4. It can be downloaded from Apple's software update page.

About Thunderbolt Software Update 1.2.1

Adds support for the Apple Thunderbolt to Gigabit Ethernet Adapter.

The update is a replacement for Thunderbolt Software Update 1.2, which was released last week but was pulled by Apple after users reported boot failures upon installing the update. Apple has posted a support article addressing the issue with instructions on how to resolve the boot problems.

Top Rated Comments

K4LK Avatar
186 months ago
Any idea when the TB to FW adapter is coming? That one's more important to me than the TB to GE one.

I was hoping for a TB to USB 3 adapter.
Score: 5 Votes (Like | Disagree)
Mr. Retrofire Avatar
186 months ago
Any idea when the TB to FW adapter is coming? That one's more important to me than the TB to GE one.
I have a TB to 56k modem adapter.
Score: 4 Votes (Like | Disagree)
186 months ago
Any idea when the TB to FW adapter is coming? That one's more important to me than the TB to GE one.
Score: 3 Votes (Like | Disagree)
photographypro Avatar
186 months ago
Not needed on most Macs (non Retina)

I didn't get this through software update for my late 2011 MBP. Downloaded and installed it, but 1/2 way through installation, I thought "I have a built in 1GB ethernet port, so why am I installing this?" I can't imagine wanting to use 2 ethernet lines at the same time.

Thunderbolt to Esata would be great, but I don't want to pay the current $200 to $300. I bought an Esata drive from Other World Computing with an Esata adapter also from them to use with a 2008 MBP. About a year later they report that this adapter doesn't work with MBPs in the 15" range (couldn't figure out why my date kept corrupting)

Now I have a 3 TB drive that I can't hook up without spending 200 to 300.

Hopefully these will come down in price.
Score: 1 Votes (Like | Disagree)
bassanoclapper Avatar
186 months ago
Its not showing in my MBP 2010 13".

MBP's didn't get TB until it was released in early 2011
Score: 1 Votes (Like | Disagree)
foodog Avatar
186 months ago
I have a TB to 56k modem adapter.

What about a TB to phone coupler?

----------

So is this simply a substitute for the previous thunderbolt update for the same purpose?

Yes but it includes the ability to use your computer after the update:mad:
Score: 1 Votes (Like | Disagree)

Popular Stories

All Screen iPhone 2030 Feature Sans Text

iPhone 18 Pro: Nine Reasons Not to Upgrade This Year

Monday September 7, 2026 5:01 am PDT by
Apple is set to unveil new iPhone 18 Pro and iPhone 18 Pro Max models on Wednesday, September 9, and the devices are expected to feature a design that's largely similar to the iPhone 17 Pro models, with a peppering of enhancements inside. Major changes are not expected until next year, when Apple is expected to introduce a radically redesigned 20th-anniversary iPhone. If you're thinking of...
iPhone 18 Pro Dark Cherry Feature

iPhone 18 Pro Reportedly Starts With 256GB of Storage

Thursday September 3, 2026 9:22 am PDT by
While the iPhone 17 Pro has double the base storage compared to the iPhone 16 Pro, there will apparently be no further increase this year. Taiwanese research firm TrendForce today again reported that the iPhone 18 Pro models will start with 256GB of storage, like the iPhone 17 Pro models. Minimum storage capacities by model:iPhone 16 Pro: 128GB iPhone 17 Pro: 256GB iPhone 18 Pro...
Foldable iPhone Ultra Still Likely to Be Missing These Five Features 16x9 1

Foldable 'iPhone Ultra' Still Likely to Be Missing These Five Features

Friday September 4, 2026 3:00 pm PDT by
Apple's first foldable iPhone, dubbed the "iPhone Ultra," is expected to launch without at least four features that will be present on the iPhone 18 Pro models, despite a price tag of at least $2,000. The iPhone Air lacks Ultra Wide and Telephoto rear cameras, a SIM card slot, and stereo speakers. With a super thin design, a titanium frame, and a glass back, the iPhone Ultra is expected to ...