LukeZGD

Downgrade and dualboot status of almost all iOS devices

UPDATED: 2026-07-12

• Reddit mirror: https://www.reddit.com/r/iOSDowngrade/comments/j1x7iv/downgrade_and_dualboot_status_of_almost_all_ios/
• GitHub Gist mirror: https://gist.github.com/LukeZGD/9d781f1b03a69fa46869384a9407a41a
• As of updating this post, there is now a free downgrade tool that utilizes a SEP exploit released for A9-A10X devices, turdus merula: https://sep.lol/
  • Untethered with blobs guide: https://ios.cfw.guide/turdusmerula/
  • Tethered guide: https://ios.cfw.guide/turdusmerula-tethered/
• Save SHSH blobs for signed iOS versions using blobsaver or Legacy iOS Kit

kconner

macOS Internals

Understand your Mac and iPhone more deeply by tracing the evolution of Mac OS X from prelease to Swift. John Siracusa delivers the details.

Starting Points

How to use this gist

You've got two main options:

LambdAurora

The list is moving out!

If you share this list, please use this link instead: https://lambdaurora.dev/optifine_alternatives

It may still be only a redirection link, but it will have a better web display of the list soon. And the list being on GitHub/GitHub pages improves load times.

The gist version of this list will stop being updated.

Why?

Ynng

.editor-group-watermark > .letterpress{
  background-image: url("https://raw.githubusercontent.com/Aikoyori/ProgrammingVTuberLogos/main/VSCode/VSCode-Thick.png") !important;
  opacity: .75;
  aspect-ratio: 3/2 !important;
}

peppergrayxyz

QEMU with VirtIO GPU Vulkan Support

With its latest reales qemu added the Venus patches so that virtio-gpu now support venus encapsulation for vulkan. This is one more piece to the puzzle towards full Vulkan support.

An outdated blog post on clollabora described in 2021 how to enable 3D acceleration of Vulkan applications in QEMU through the Venus experimental Vulkan driver for VirtIO-GPU with a local development environment. Following up on the outdated write up, this is how its done today.

Definitions

Let's start with the brief description of the projects mentioned in the post & extend them:

jam1garner

This is a mini-tutorial of sorts for getting started with gdb on the Switch, with the target audience being people who want to mod and/or reverse games, with no prerequisite knowledge of gdb. The goal will be to walk you through some of the basic workflows needed to use a debugger on the Switch, while being brief enough for skimming for when you forget things.

If some part is unclear, your OS doesn't have install instructions, or you feel part of your workflow should be added here, feel free to comment any additions.

(If you only need a quick reference Jump to the Appendix)

Installing GDB

First off you'll need a version of GDB compatible with aarch64. This can be obtained via either a distribution of

MPThLee

/**
  * !!!! This code doesn't work anymore !!!!
  * 
  * - You can check working code on comments. I won't update this code anymore.
  *
  * Also, I just decided to remove this code. You can check revisions for old code.
  * Since this code was made for discord client that almost 5 years ago, It seems like doesn't work anymore.
  * I don't want people keep arguing in the comments, i decided to remove this code.
  *
  * Note: This code is now fulfilled with Javascript comments. This code won't work even if you pasted to console. doesn't do anything.

cb372

(This is a translation of the original article in Japanese by moratorium08.)

(UPDATE (22/3/2019): Added some corrections provided by the original author.)

Writing your own OS to run on a handmade CPU is a pretty ambitious project, but I've managed to get it working pretty well so I'm going to write some notes about how I did it.

fay59

Here's a list of mildly interesting things about the C language that I learned mostly by consuming Clang's ASTs. Although surprises are getting sparser, I might continue to update this document over time.

There are many more mildly interesting features of C++, but the language is literally known for being weird, whereas C is usually considered smaller and simpler, so this is (almost) only about C.

1. Combined type and variable/field declaration, inside a struct scope [https://godbolt.org/g/Rh94Go]

struct foo {
   struct bar {
 int x;

aamiaa

The original snippet no longer works!

On 02/09/2024 at around 8pm UTC, Discord flipped an experiment (2023-09_mobile_redesign_override_toggles) which ignores the layout toggle that this script relied on.

If you want to continue using the old layout, you can either use a modded mobile client (such as Vendetta) to disable that experiment, or downgrade to an old version of the app.

Method 1 - Downgrading (Android)

Tip

Use this one if you want a fast, beginner-friendly solution and don't mind using a version from November 2023

1. Download version 205.15 of Discord mobile app from ApkMirror