Here i'v something really cool and useful for u. With this tool you can do any operation on a sis/sisx file, like signing ( it contains 3 certificates and keys by default and you can add yours too ), extracting it on phone to view its files and editing them with any hex editor such like lcg x-plore have, repack it after editing, add or delete a file from/into sis package without extracting it (you'll need to sign it again after tempering with it), or just create an installation package with your own files... !
And here comes the best point, many of you may have experienced "Unable to install trusted application from untrusted supplier" error. Now you won't anymore, open your installer file in it and change its UID.
Look for UID in second field and change it from 0x2****** to something like 0xA******, you can just replace 2 with A, sign your application from last field, save it and insall . . . .
Use your mind and there are many things you can do with it.
Also i'll update this thread with new tips and tricks if i discover any. So keep visiting and dont forget to hit thanx and add some repo plz. I'm just a fresher here and need a tons of thanx, u know.
So just give it a try, download and enjoy