Approximately 2–3 GB, depending on the specific Mac model.
While the update fixed the "bricking" bug, some community members reported standard post-update hurdles:
Unlike most Big Sur releases, version 11.2.2 was unusual because it contained (publicly listed security vulnerabilities). It was almost exclusively a hardware-safety patch. macOS Big Sur 11.2.2 (20D80)
System slow after MacOS 11.2.2 update - Apple Support Communities
Apple implemented safeguards that improved how the OS handles power delivery from these accessories to prevent electrical overloads. 🛡️ Security & Technical Details Approximately 2–3 GB, depending on the specific Mac model
Released on February 25, 2021, was a critical, highly focused update designed to protect Mac hardware from a physical "bricking" threat. ⚡ The "Bricking" Prevention
Occasional reports of UI sluggishness led experts to recommend running tools like EtreCheck to identify conflicting third-party software. System slow after MacOS 11
The primary purpose of this version was to stop certain from causing permanent hardware damage. Before this fix, users reported that connecting their Macs to specific powered docks would cause the machine to become completely unresponsive and "blank".