firmware downgrade Help!

[ALMASOUDKW]

hi,
I'm new in diagzone area, I just downloaded diagzone app to try but its update my thinkdiag dongle automatically!

now I can't use the original thinkdiag software, I tried to fix firmware, but I can't! it failed every time I tried to

current firmware V11.91
I need to downgrade to v11.84

please help me to do it.

thank you,

 

[ALMASOUDKW]

Please help

 

[virusmind]

hi,
I'm new in diagzone area, I just downloaded diagzone app to try but its update my thinkdiag dongle automatically!

now I can't use the original thinkdiag software, I tried to fix firmware, but I can't! it failed every time I tried to

current firmware V11.91
I need to downgrade to v11.84

please help me to do it.

thank you,

I don't think there is an easy way to go back to stock once you've used it with diagzone. St-link I think is the only your way to go