Samsung Galaxy Grand Neo (GT-I9060) experiments

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New member
Apr 21, 2021
Pantin, IDF

I have an old Samsung GT-I9060 (not sure if I should name it “Galaxy Grand Neo” or “Galaxy Grand Lite”) ; this is definitively not a ”Samsung Galaxy Grand Neo Plus”, but no such thread like ”Samsung Galaxy Grand Neo/Lite” without “Plus” seems to exist here.

I am trying to explore it using tools like adb or heimdall, I have Windows (10, 8, 7 , Vista and XP) AND Linux (Debian) computers in order to do this. Also Android Studio on Windows but I'm quite beginning on it, I'm more used on Microsoft Visual Studio and web languages.

I would like to understand how it works if I want to root it, or if I try to create my own firmware, either from existing ones or even eventually from source code.

I would like to avoid using any existing hack without completely understand any underlying handling.

So I got the corresponding stock firmware, and tried to explore it (by un-tarring in a Linux environment).

As a result, I get the following files :
total 1458620
-rw-r--r-- 1 root root 18087936 1970-01-01 01:00:00 BcmCP.img
-rw-r--r-- 1 root root 5472768 1970-01-01 01:00:00 boot.img
-rw-r--r-- 1 root root 30626024 1970-01-01 01:00:00 cache.img
-rw-r--r-- 1 root root 2440 1970-01-01 01:00:00 dt-blob
-rw-r--r-- 1 root root 7430328 1970-01-01 01:00:00 hidden.img
-rw-r--r-- 1 root root 614400 1970-01-01 01:00:00 param.lfs
-rw-r--r-- 1 root root 6935040 1970-01-01 01:00:00 recovery.img
-rw-r--r-- 1 root root 645244 1970-01-01 01:00:00 sboot.bin
-rw-r--r-- 1 root root 1422287488 1970-01-01 01:00:00 system.img

Now I would like to understand all of them.
I can find utilities for going deeper and explore inside most .img files for example.

But one of the most mystifying seems to be BcmCP.img. Googling it doesn't help me.

What is exactly in this file ?

Getting and analyzing the PIT using heimdall, I can see it is likely a partition contents.

But I can't identify any filesystem.

How can I go deeper into this ?

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