Which properties of android.os.Build are fixed?

Question

I require the list of fixed properties of android.os.Build class. I've obtained the list from here I bold those that I know are fixed. By fix I mean no change by firmware update, reset factory, ...

1. android.os.Build.VERSION.RELEASE //The current development codename, or the string "REL" if this is a release build.

2. android.os.Build.BOARD //The name of the underlying board, like "goldfish".

3. android.os.Build.BOOTLOADER // The system bootloader version number.

4. android.os.Build.BRAND //The brand (e.g., carrier) the software is customized for, if any.

5. android.os.Build.CPU_ABI //The name of the instruction set (CPU type + ABI convention) of native code.

6. android.os.Build.CPU_ABI2 // The name of the second instruction set (CPU type + ABI convention) of native code.

7. android.os.Build.DEVICE // The name of the industrial design.

8. android.os.Build.DISPLAY //A build ID string meant for displaying to the user

9. android.os.Build.FINGERPRINT //A string that uniquely identifies this build.

10. android.os.Build.HARDWARE //The name of the hardware (from the kernel command line or /proc).

11. android.os.Build.HOST

12. android.os.Build.ID //Either a changelist number, or a label like "M4-rc20".

13. android.os.Build.MANUFACTURER //The manufacturer of the product/hardware.

14. android.os.Build.MODEL //The end-user-visible name for the end product.

15. android.os.Build.PRODUCT //The name of the overall product.

16. android.os.Build.TAGS //Comma-separated tags describing the build, like "unsigned,debug".

17. android.os.Build.TYPE //The type of build, like "user" or "eng".

18. android.os.Build.USER

Please help me complete the list

Answer 1

If you look at the source code to Build, you will see that all of these values -- including those you have in bold -- come from system properties files. Hence, any of these values can be modified by ROM modders or the original device manufacturer as they see fit.