Android Question need some help with (signkey)

Hi all.
I made a mistake.
I formatted my pc, installed b4a, compiled 3 applications and sent it to google play.
OK.
i can upload new versions etc... all works correct.
but the problem i see now is: i m using the debug key i think. i not loaded a existing key.
I really forgot this step.

now i have a big problem, if i try create a new key or load existing key i cant update my apps on google play, show me a singkey error (not same key).

if i use (use debug key) all works correct.
its possible get this debug key file?

For now to update my applications I am forced to use the debug key.
But if in the future I format or something happens on the pc my debug key will probably change.

its possible get (the file) of debug key? and if i get this what is the password used etc...?

pls, someone save me *-*

In fact Google Play will reject APKs signed with the debug key.

Click to expand...

this not happens

ps: i found the file debug.keystore, but what is the pass? can i use this file on future, if i format my pc, or change my pc?

thx