Hello
I have a little question
I am in the process to get a japhar nc3 for a dm800HDse V2 (clone) running sim 2.2 and ssl 88a with second stage r89 installed .
In the tutorial, it is mentioned to install secondstage-dm800sev2_allsim.rar with "original" sim before replacing.
Is it mandatory to do that or being on 88a(89) is good enough ?

Can I back up my actual second stage before flashing with yours ?

Thank you for the support