Sending iBSS/iBEC Failed

[igorkost-ibm]

Describe the issue Was trying to downgrade iPhone 5s 12.5.1 Each and every time failed on "Sending iBSS/iBEC" Tried both Catalina fixes

Screenshots sudo python3 ./vieux -i iPhone_4.0_64bit_10.3.3_14G60_Restore.ipsw

Computer (please complete the following information):

• Python Version: 3.7.3
• Vieux Version: 1.0.1

iOS Device (please complete the following information):

• Device: iPhone6,1 (iPhone 5s 32gb 12.5.1 (Find my iPhone: off, security pin: off))
• Desired Version: iOS 10.3.3

[j188482367]

same

[igorkost-ibm]

I have solved this issue for my system. In my case the ./resources/bin/irecovery wasn't working even after all the fixes in the describtion. I had to recompile the irecovery utility from sources and then it worked 😀 also did the same for the tsschecker which also seemed not to work. You can try with my binaries irecovery.zip