PSP 3.80 Firmware: "Update to 2.00" Link Confusion

You're misreading the version numbers.

Key Fact

3.80 > 2.00. Firmware versions only increase. You cannot downgrade from 3.80 to 2.00 via an "update" link—that would be a downgrade, which is impossible on official firmware and bricks the PSP if forced.

Your Situation

• PSP on OFW 3.80 (Official Firmware).
• Cannot run ISOs/homebrew from Memory Stick—OFW blocks unsigned code.
• The "update to 2.00" link was likely for users on 1.50/2.00 wanting to upgrade to 3.xx, or a malicious/confusing site.

Solution: Install Custom Firmware (CFW)

1. Identify Model: PSP-1000, 2000 (check date code), 3000, Go, Street.
2. Follow wololo.net or psp.hacks.guide for your model.
3. Most paths: Install 6.61 Infinity (permanent on 1000/2000 non-v3) or 6.61 LME / PRO-C2 (temporary/fast recovery on all).
4. Backup NAND first (PSPIdent).