OS 11.2.1 (20D74) for Developer Transition Kit
Currently signed — installable
Download
Jailbreak compatibility
No jailbreak
There is no public jailbreak for OS 11.2.1 on Developer Transition Kit.
Tip: Beware of sites that charge for a jailbreak or ask you to install a profile. Real jailbreaks are always free and open source.
Share
Firmware information
Version
11.2.1
Build ID
20D74
Release date
Feb 9, 2021
Upload date
Feb 6, 2021
File name
UniversalMac_11.2.1_20D74_Restore.ipsw
File size
12.76 GB
MD5
2f0f899d9eb35e84faac2134c3e0754f
SHA1
e86a28704fc5e46feeaa118660bb8dece33a936d
Device information
Device
Developer Transition Kit
Identifier
ADP3,2
BoardConfig
J273aAP
Platform
t8027
CPID
32807
BDID
66