Requirements:
- iPad with iOS 8 with jailbreak
- iPad connected to wifi network - ip 192.168.55.100
- Linux localhost
Copy file from iPad to local host with scp
scp 192.168.55.100:/private/var/mobile/Library/Preferences/com.apple.springboard.plist /tmp/SpringBoard/com.apple.springboard.plist
Convert com.apple.springboard.plist from binary plist to xml
sudo apt-get install libplist-utils
plistutil -i com.apple.springboard.plist -o read.plist
Change values and totaly remove SBDeviceLockBlockTimeIntervalSinceReferenceDate
<key>SBDeviceLockFailedAttempts</key>
<integer>-9999</integer>
<key>SBDeviceLockBlocked</key>
<false/>
Convert com.apple.springboard.plist back from xml to binary plist.
plistutil -i read.plist -o com.apple.springboard.plist.new
Push file back to iPad
scp /tmp/SpringBoard/com.apple.springboard.plist.new 192.168.55.100:/private/var/mobile/Library/Preferences/com.apple.springboard.plist
Delete/rename LockoutStateJournal.plist
ssh 192.168.55.100
mv /private/var/mobile/Library/SpringBoard/LockoutStateJournal.plist /private/var/mobile/Library/SpringBoard/LockoutStateJournal.plist.old
Restart iOS device.
Should have unlimited tries.