Just like Samsung phones have some features that stock Android doesn’t, you’ll find cool features in custom ROMs. They might add settings that aren’t normally available, or different methods of navigation. Prominent examples are TouchWiz from Samsung and Sense from HTC. However, you must bear in mind that any failure during its installation can cause the mobile to be defective , or in the worst case scenario, unusable. On the other hand, Custom ROMs are supported by quick feedback from the Android user community.

However, rooting does not necessarily require an unlocked bootloader. Many devices come with unlocked bootloaders from factory, and therefore users with these devices can skip this step. There are many reasons why a user wants to install the stock firmware.

• The biggest obstacle to using a ROM to revert to stock is that you’re relying on someone else to create the ROM for you.
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• No bloatware, no GApps, no third party patches and libraries, no extra features and tweaks.

This stock camera works with almost all AOSP-based custom ROM. If you are using any custom ROM then you can easily use it on your device or if you are using any stock ROM then you can also try this module, with an 80% chance it will work.

As of 2010[update], most portable music players support firmware upgrades. Some companies use firmware updates to add new playable firmware files file formats (codecs). Other features that may change with firmware updates include the GUI or even the battery life. Most mobile phones have a firmware over the air firmware upgrade capability for much the same reasons; some may even be upgraded to enhance reception or sound quality. (Android Read Only Memory) A file containing the executable instructions (a system image) of an Android OS and affiliated apps. The “stock ROM” comes installed on the phone or tablet, while a “custom ROM” comes from a third party.

The ROM includes basic but useful features that include but are not limited to customizing the status bar, changing the overall theme, editing the navbar, and much more. Despite the obstacles, flashing a factory image is the best option if you ever need to completely reset your device. It can also serve as the nuclear option if you’ve bricked your device and no other methods to fix it are working. That said, using a Nandroid backup to return to stock is only a short-term option.