Recover, unbrick, revive, fix bricked chips

[amal]

This post is meant to be a consolidated place for posting recovery procedures for various magic chips and the T5577 using a proxmark3.

FYI, dngr.us/unbrick links to this post.

Before you start

• Firmware: these procedures use the Iceman/RRG fork of the proxmark3 client. Some flags and commands shown here do not exist in stock firmware.

Which chip are you trying to fix?

• T5577 LF chip (xLED, xACID, NExT LF side, xMagic LF side)
  • Reviving a bricked T5577
• Gen1A Magic Mifare 1K uses backdoor unlock (40/43)
  • Recovering Magic Mifare 1k gen1a & gen2 chips
• Gen2 Magic Mifare 1K direct block 0 write with factory key
  • Recovering Magic Mifare 1k gen1a & gen2 chips
• Gen4 Ultimate Magic configurable identity (dUG4T, etc.)
  • Recovering a gen4 ultimate magic chip
• iClass Legacy HID iClass (flexClass)
  • Recovering iClass Legacy flexClass picopass