Custom ROM vs Ported ROM vs GSI- Which one is better

custom rom vs ported rom vs gsi

In today’s article, we’ll talk about the various types of ROMs. Do you know how many types of ROMs are available on the market? We will explain what are the advantages and disadvantages of these ROMs. And we would also like to discuss which ROMs we should use and which ones to be avoided, etc.

There are 4 common types of ROMs that are available in markets for Android devices. Stock ROM, Custom ROM, Ported ROM and GSI ROM. We usually use stock ROMs and custom ROMs on all Android phone devices.You may be wondering when should we use a custom ROM and when one should use the port ROM and the GSI ROM. In today’s article, we’ll take a closer look at custom ROM, port ROM, and GSI ROM.

What Is Custom ROM

Every year, Google releases its new version of Android, as well as the source code. The custom ROM is developed by modifying all of these source codes. You’ve probably heard the names Pixel Experience, Lineage OS and Evolution X. In fact, these are all Modified ROM or Custom ROMs.

what is custom rom

The main reason for the popularity of the Android operating system is that Android is a purely open source project. This allows any third-party developer to create custom ROMs with these source codes.

The main purpose of creating a custom ROM is to create a modified ROM. Developers often publish custom ROMs for specific devices by adding customizations, performance improvements, and features according to the user’s needs.

Benefits Of Custom ROM’s

There are some benefits to using custom ROMs. Third-party developers create these ROMs based on their user usage. Many of us want more battery backup, while others prefer gaming. Some people use custom ROM for customization and features. Developers take all these aspects and create custom ROMs. That’s why we see so many custom ROMs for a specific device.

A custom ROM can only be installed on a specific phone. Which makes it more user-friendly.Besides, these ROMs have less BUGs. Once the custom ROM is official, we receive frequently updates. All these updates are managed by a developer or co-developer. So, if custom ROMs are missing features, it’s no big deal for them to fix the problem.

Using a custom ROM has several other additional benefits, such as OT update and security patches. The banking apps now supports all custom ROMs. And a lot of people use custom ROM as their daily driver. The custom ROM community is huge, so we get quick support from developers. If we have any problems, we could contact the developer directly. By installing custom cores, we can expand the backup battery and increase or decrease the performance of the device.

what is ported rom

What is Ported ROM?

Port ROM is a type of custom ROM. How many of us have used OnePlus Oxygen OS? Or many of us would like to use Oxygen OS. However, this ROM is only officially available on OnePlus phones. But with the help of the port ROM’s, we can use all the ROMs on our smartphone. We can also install Samsung’s OneUI on our Xiaomi, Vivo phones using Ported ROM.

Pixel OS and Oxygen OS are the two most widely used port ROMs on the market. These ROMs are very popular since the user experience of these ROMs is quite good in daily uses.In other words, when a developer creates a ROM with a different device source code, it is called a port ROM.

However, there are some disadvantages for using a Ported ROM.

The biggest problem is Bugs. Port ROMs have more errors than custom ROMs because this ROM is specifically designed for another device that has completely different specifications. So it’s normal to have bugs. And all these bugs are hard to fix. By using updates we can fix these bugs. But there is no option for OT updates on these ROMs, so it takes longer time to resolve the problems. We also don’t receive frequent software updates and security patches for these ROMs. We only get updates every two or three months.

what is gsi rom


Generic system images, GSI ROMs can be installed on any smartphone. Actually, GSI isn’t a ROM, it’s an image file with the .img extension, which we usually install into our phone as a custom ROM.

Every year, when Google releases a new version of Android, Google also releases the version of GSI. GSI ROMs are not designed for a specific device, so these ROMs can be flashed on any smartphone. However, we didn’t receive any updates here. Therefore if there are any bugs present in GSI ROMs, it is almost impossible to fix them. Only contributing developers can fix such bugs.

The requirements for flashing GSI ROMs, such as, the phone must be compatible with Project Treble and the Android version must be at least Oreo. The way to flash all these GSI ROMs differ greatly from Custom ROMs. GSI ROMs are only used when there are no custom ROM available for your phone. There are some drawbacks while using GSI ROMs. These ROM’s have more bugs than Port ROM’s.We don’t receive any updates from developers that makes it impossible to fix the bugs.


If there is a custom ROM available for your phone, you must use a custom ROM.Because community support for custom ROM is important and we get developer support and off-topic user support. This means that we can fix bugs by discussing with other members of the community.

The community of Ported ROMs is not very active. That’s why we’ll see the update much later. Fixing bugs in all these ROMs is a bit complicated. But you should only use the ROM port if you want to taste a new user interface.

The GSI ROM can be flashed on any device. There are some restrictions on flashing all of these ROMs. For example, if your device support Treble AB, the method for flashing the GSI ROM is different. And the flashing method is different for A only Treble.

We also need to select a custom vendor when performing the installation. If the installation process goes wrong,there are chances of soft or hard bricks. For this reason, we should only use the GSI ROM if there is no custom ROM available for our phone. That’s why we think it’s better to use custom ROM on our device.

What is a Custom ROM?

A custom ROM is generally modified and upgraded version of an Android operating system.

What are the benefits of custom ROM?

Installing a Custom ROM offers you frequent updates, high CPU and GPU performance, More useful Customization and tons of handy features.

What is the disadvantage of custom ROM?

Custom ROM do have few drawbacks such as, hard break and soft brick and data loss and most importantly you will void your device warranty.

Is ported ROM safe?

Always a safe process unless you are a new to installing process.

What is the difference between custom ROM and GSI?

GSI ROM’s are unmodified open source project which can be installed on any device. Custom ROM’s are device model specific. You cannot install Poco F1 custom ROM’s on Poco X3 Pro devices.

Leave a Comment