Mostly useful applications are not signed, and when you try to install them you see a certificate error. So i think that its very important to hack

s60v3 devices. You cannot sign every application, and now you are unable to find cert and key for your mobile. Almost all python applications are

useful, but no signed. In this article, i will try my best to make this method as easy as possible.

Our Main Goal

What we have to do in whole method? How it actually works?
I know you've all these questions in your mind. Let me tell you in a easy way with my own theory.
There is a watchman in your s60v3 phone, which stops unsigned files and let go signed files only. The name of the watchman is installserver.exe.
For example check this photo

All we have to do is change the watchman and put our own watchman instead of Nokia's watchman.
To do this, we have to access the locked home of the watchman which is located in C:/bin folder. It's nearly impossible until we make some

changes.
To access the home we have to install Rom Patcher and we have to apply Open4all patch. Open4all is a key to the door of watchman house.

Now i hope you've understood the whole idea.

There are so many methods for this, but let me tell you two best methods.

Method I

Files needed in this method are
Download all files in Zip file here
- X-plore v1.58
- Rom Patcher Signed
- .Sys Folder

1. Download the Zip file i listed above and unzip it with X-plore.
2. In this file you will find a folder name .Sys. Copy that .Sys folder and paste it in C:/ drive.
3. Restart your phone
4. Install Rom Patcher from zip file.
5. Open it and apply Open4All RP+ patch
6. Now you can access the C:/sys/bin folder [its watchman home as our previous theory :) ]
7. Now goto C:/sys/bin folder and replace the installserver.exe (the nokia watchman as our theory) file with our own installserver.exe (our own
   
   watchman as our theory)
8. Please select the installserver.exe file according to your phone. If you don't know the type, then check the list below

S60v3 SymbianOS 9.1

Nokia 3250 Nokia 5500 Sport Nokia E50 Nokia E60 Nokia E61 Nokia E61i Nokia E62 Nokia E65 Nokia E70 Nokia N71 Nokia N73 Nokia N75 Nokia N77 Nokia N80 Nokia N91 Nokia N91 8GB Nokia N92 Nokia N93 Nokia N93i Samsung SGH-i570

S60v3 FP1(v3.1) SymbianOS 9.2

LG KS10 LG KT610 LG KT615 Nokia 5700 XpressMusic Nokia 6110 Navigator Nokia 6120 classic Nokia 6121 classic Nokia 6124 classic Nokia 6290 Nokia E51 Nokia E63 Nokia E66 Nokia E71 Nokia E90 Communicator Nokia N76 Nokia N81 Nokia N81 8GB Nokia N82 Nokia N95 Nokia N95 8GB Samsung SGH-G810 Samsung SGH-i400 Samsung SGH-i408 Samsung SGH-i450 Samsung SGH-i458 Samsung SGH-i520 Samsung SGH-i550 Samsung SGH-i550w Samsung SGH-i560 Samsung SGH-i568

S60v3 FP2(v3.2) SymbianOS 9.3

Nokia 5320 XpressMusic Nokia 5630 XpressMusic Nokia 5730 XpressMusic Nokia 6210 Navigator Nokia 6220 classic Nokia 6650 fold Nokia 6710 Navigator Nokia 6720 classic Nokia 6730 classic Nokia 6760 slide Nokia 6790 Surge Nokia E52 Nokia E55 Nokia E71x Nokia E72 Nokia E75 Nokia N78 Nokia N79 Nokia N85 Nokia N86 8MP Nokia N96 Nokia X5 Samsung GT-I7110 Samsung SGH-L870 Samsung GT-i8510 (INNOV8)
9. Restart your phone
10. This method is finished, now try to install any unsigned file.

Method II

1. Download Secman from here
2. Install it and launch it
3. Open option and click on 'install root certificate'
4. Your phone will restart after this process
5. This method is finished, now try to install any unsigned file.
6. This method may not work after multiple use

Method II doesn't work on all phones, but it works perfectly on phones like N73.
If Method II stops working, then try Method I.
I am not responsible for any damage, nothing bad gonna happen if you try these methods carefully.
If somehow you did anything wrong then you can reset your mobile phone easily
Don't forget to comment. Cheers :)