Apple Introducing New Internal USB-C Diagnostic Tool
Apple is introducing a new internal USB-C Diagnostic Tool as a successor to its existing Serial Number Reader, which can be used to both collect a device's serial number directly from its logic board and test power on a device itself.

With only a Lightning version
previously available, images have surfaced of a new USB-C Diagnostic Tool (UDT) that appears to be known as "ChimpSWD" internally. The new tool was produced for compatibility with Apple's iPad Pro lineup, which has been USB-C based since 2018.
Based on the above information, it appears a technician should connect the UDT to the Hardware Diagnostic Interface (HDI) Mac using the appropriate cable and the other end to the target device to correctly utilize the new tool and obtain diagnostic information.
Apple has informed service providers that its Apple Service Toolkit 2 diagnostic system has been updated to support HDI Serial Number Reader for the first-generation 11-inch iPad Pro and third-generation 12.9-inch iPad Pro using the new USB-C Diagnostic Tool. Support for the latest second-generation 11-inch model and fourth-generation 12.9-inch model will follow at a later date.
Popular Stories
Apple is expected to unveil the iPhone 17 series on Tuesday, September 9, and last-minute rumors about the devices continue to surface.
The latest info comes from a leaker known as Majin Bu, who has shared alleged images of Apple's Clear Case for the iPhone 17 Pro and Pro Max, or at least replicas.
Image Credit: @MajinBuOfficial
The images show three alleged changes compared to Apple's iP...
Apple's iPhone 17 Pro and iPhone 17 Pro Max models will feature a number of significant display, thermal, and battery improvements, according to new late-stage rumors.
According to the Weibo leaker known as "Instant Digital," the iPhone 17 Pro models will feature displays with higher brightness, making it more suitable for use in direct sunlight for prolonged periods. The iPhone 16 Pro and...
Apple will launch its new iPhone 17 series this month, and the iPhone 17 Pro models are expected to get a new design for the rear casing and the camera area. But more significant changes to the lineup are not expected until next year, when the iPhone 18 models arrive.
If you're thinking of trading in your iPhone for this year's latest, consider the following features rumored to be coming to...
Just one week before Apple is expected to unveil the iPhone 17 series, an analyst has shared new price estimates for the devices.
Here are J.P. Morgan analyst Samik Chatterjee's price estimates for the iPhone 17 series in the United States, according to 9to5Mac:
Model
Starting Price
Model
Starting Price
Change
iPhone 16
$799
iPhone 17
...
An iPhone 17 announcement is a dead cert for September 2025 – Apple has already sent out invites for an "Awe dropping" event on Tuesday, September 9 at the Apple Park campus in Cupertino, California. The timing follows Apple's trend of introducing new iPhone models annually in the fall.
At the event, Apple is expected to unveil its new-generation iPhone 17, an all-new ultra-thin iPhone 17...
Apple is preparing to release iOS 18.7 for compatible iPhone models, according to evidence of the update in the MacRumors visitor logs.
We expect iOS 18.7 to be released in September, alongside iOS 26. The update will likely include fixes for security vulnerabilities, but little else.
iOS 18.7 will be one of the final updates ever released for the iPhone XS, iPhone XS Max, and iPhone XR,...
A new survey has found that nearly seven in ten iPhone owners in the United States plan to upgrade to an iPhone 17 model, signaling strong demand ahead of Apple's expected unveiling of the devices at its September 9 keynote.
Smartphone price comparison platform SellCell surveyed over 2,000 U.S.-based iPhone users in August to assess upgrade interest and brand loyalty before Apple's event....