noTahoe

Block macOS Tahoe (26.x) upgrade while staying on Sequoia 15.x

Simple, zero-interaction script. Prevents the Tahoe upgrade prompt and red badge while still allowing native security updates (XProtect/MRT).

Features

• Hides Tahoe completely (no more red badge or upgrade prompt)
• Uses Apple's audience trick (no beta enrollment, no beta software ever installed)
• Keeps native XProtect and MRT updates via xprotect
• Single clean LaunchAgent (com.noTahoe.plist)
• Automatic log cleanup (older than 30 days or larger than 50 MB)
• Self-installs to /usr/local/bin/noTahoe

Requirements and Caveats

• Requires elevation (Administrator Privileges)
• Can be run as a regular user however it does attempt to self elevate and does so cleanly if your user is given NOPASSWD in sudoers. Run this to find out:

alias sudocheck='{ echo -e "USER\tNOPASSWD"; sudo -n ls /dev/null >/dev/null 2>&1 && s="ENABLED" || s="DISABLED"; printf "%-15s %s\n" "$(whoami)" "$s"; } | column -t'
sudocheck

• Upon self elevation without NOPASSWD set, you may be prompted for your credentials to elevate

Install

One-line Install

curl -fsSL https://raw.githubusercontent.com/ADTC/noTahoe/main/noTahoe.sh | sudo bash

Manual Install

curl -L -O https://raw.githubusercontent.com/ADTC/noTahoe/main/noTahoe.sh
chmod +x noTahoe.sh
./noTahoe.sh

Uninstall (Full Removal)

One-line Uninstall

curl -fsSL https://raw.githubusercontent.com/ADTC/noTahoe/main/uninstall.sh | sudo bash

Manual Uninstall

curl -L -O https://raw.githubusercontent.com/ADTC/noTahoe/main/uninstall.sh
chmod +x uninstall.sh
./uninstall.sh