Downgrade bootloader E100 SMART

[Guest cesco]

Hi to everybody I have a SMART SPV E100 version ROM 1.70.13 with Bootloader 1.09 and I want to deSIMlock.

I have read on the forums that I must replace the bootloader of my SPV with a version preceding like 0.98 and then to use the program SPVunlock.exe to get the code of deSIMlock but I don't succeed in replacing the bootloader!

Can someone explain me the procedure?

I love my SPV and I want to decontrol it! Help!

Thanks to all those that will answer