Gui Rambo

I know a thing or two about AirPods. App developer, security researcher. 🏳️‍🌈🧩

Website: https://rambo.codes
Twitter: https://twitter.com/_inside
Github: https://github.com/insidegui
Gigahertz: https://gigahertz.fm

Last Notes

2026-03-24 19:46:22 UTC

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it didn't fit within the character limit, but the reason I was looking into it was because of Todd's post in a Slack group

2026-03-24 19:11:12 UTC

Fun fact: the "EnablePasteboardPrivacyDeveloperPreview" defaults flag on macOS doesn't just enable confirmation for accessing the clipboard, it moves the responsibility for an app's main menu from the app's own process into a separate system process (TrustedUIService). This means that the contents of the menus have to be serialized to be sent over XPC to that system process, breaking things such as custom SF Symbols in menu icons. I guess that's part of why it's still just a developer preview.

2025-06-19 01:22:36 UTC

Someone who works on YouTube needs to realize that bilingual people exist. For a while now the app insists in translating video titles from Portuguese to English (I use my devices in English). If I change the language to Portuguese, it then translates video titles from English to Portuguese. I just want to see the original content as it was posted by the creator. And now it's even auto-enabling AI dubbing 🤦🏻‍♂️ Give me a checkbox to turn this off, please!

2025-04-02 13:02:43 UTC

This airline app is crashing every time I try to finish my check-in. I got the crash log just out of curiosity, and the app's bundle ID says a lot about how much they care… 🤣
https://files.mastodon.social/media_attachments/files/114/268/501/406/896/813/original/045ed88716861d9b.png

2025-03-20 12:54:11 UTC

Undefined, my favorite holiday destination!
https://files.mastodon.social/media_attachments/files/114/194/857/809/448/600/original/e4be271611a15930.png

2024-12-18 22:15:24 UTC

With the ability to virtualize a Private Cloud Compute node on macOS, I was wondering if it could run Doom, of course. And yes, it can! 😅
https://files.mastodon.social/media_attachments/files/113/676/130/264/537/587/original/b451abeebea5fa3d.mp4

2024-08-04 13:33:08 UTC

iOS developers: there's one more place to clean up if you're running Xcode 16: "/System/Library/AssetsV2/com_apple_MobileAsset_iOSSimulatorRuntime”
Although it's in /System, it's actually a separate mount point so it is read/write. You can delete older runtime folders in there that you're no longer using. This saved ~30GB on my Mac

2024-07-30 17:21:45 UTC

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I tested this with a report from an iPhone 15 Pro and another one from an M1 Max MacBook Pro. All requests on iPhone 15 Pro were handled by Private Cloud Compute, all requests on Mac were handled locally. Most of them were using writing tools or Safari's summary feature.

2024-07-30 17:20:37 UTC

Here's a shortcut that takes an Apple Intelligence report JSON file and tells you how many requests were handled locally vs. on Private Cloud Compute. Reports can be exported in Settings > Privacy > Apple Intelligence Report. https://www.icloud.com/shortcuts/f482fe43930c49eab2fba96ffc06a913

2024-07-13 15:39:23 UTC

In case you're curious, I've checked the implementation for icon segmentation in iOS 18 to see how they're generating the dark icons. There's no ML/AI involved, it's all just clever math. IconServices extracts the foreground and determines whether it should be tinted with the background color or left as-is, and there are configurable thresholds for when the results are not acceptable, which is when it falls back to just darkening the icon. Looks like it uses ARM Neon instructions for speed
https://files.mastodon.social/media_attachments/files/112/779/929/530/403/373/original/3e433ad662a2d1fa.png
https://files.mastodon.social/media_attachments/files/112/779/929/836/518/559/original/67e5379eeebc8275.png