downgrade the TCPIP_Updates_742 to version 1.4

Hello,

For my development, I’m using Digi ESP for NET+OS.

I did update the TCPIP_Updates_742 to version 1.42. But because I’ve got a few problems with this version, I would like to downgrade to the previous installed version 1.4 (not 1.41).
I’ve tried the backup on Digi ESP but it didn’t work.

Would anybody know how to come back to this version?

Thanks

duplicate : http://forums.digi.com/support/forum/viewthread_thread,8638_offset,0

Not the same question