Contents
Introduction
Today’s mobile devices are very rapidly getting old. Two or three years ago you saved for the desired gadget, but it did not last, and a couple of years, is outdated and is not supported by the manufacturer. But if the model is popular, it is not necessary to be sad, because the craftsmen are on the alert, engaged in the development of informal projects based on the Android OS.
In this article we take a look at custom firmware selection process, know where to look, and how to install. But in the end we find out whether or not to do it all.
As an experimental act tablet Samsung Galaxy Tab 2 7.0 (processor TI Omap 4430, 2 x 1200 MHz, PowerVR videosoprotsessor 540 384 MHz, 1 GB RAM) with unofficial firmware CyanogenMod 13.
«Obsolete» device
In my personal use is the tablet Samsung Galaxy Tab 2 7.0, which was released at the beginning of the distant 2012, when the dollar was still less than 30 rubles, but it is not about that. This unit is based on a dual-core processor sharper Ti Omap, equipped school PLS display and high-quality housing.
I actively use the tablet for four years, no problems with it and do not feel a whole it suits me. And compared to the current models of the same general price range all gorgeous (without any sarcasm). However, he has one drawback – obsolete software.
OC Android ICS and Jelly Bean, which supports Samsung Galaxy Tab 2 7.0, already rather overgrown beard. For now, the actual version of Android M. And we even Android Lollipop, in which the optimization of productivity, autonomy, and there are all the new chips. At best, you can gape at rotok Android Marshmallow …
However, to install a new version of the old OC Android device is still possible, even including the aforementioned Android M.
Selecting firmware
The first step is to choose the firmware and to learn, and is there any unofficial version of the system to our aid? Owners of flagship smartphones and tablets (such as the Google Nexus, Samsung Galaxy S, HTC One, Sony Xperia Z and others) is not worth worry – the firmware is, and in a large quantity.
At the same time for the usual “Chinese” models and brands of second and third-tier third-party firmware are rare, it is not only a popular, but also with the manufacturers restrictions, as, for example, from Xiaomi.
Open the search engine, we find any forum on our device and we study what we can offer craftsmen. In all kinds of homemade and ports should not delude ourselves with other devices, because nothing good can be expected from such images.
It is better to look at the official firmware build such giants as CM, AOSP, Google Play Edition and Miui. A little less seriously the ColorOS and others. Learn about the pros and cons, as well as the differences in each of the systems can be on the Internet, because it is difficult to fit into one article.
In our case the choice was to CyanogenMod version 13, which is based on OC Android 6.0. In my opinion, not bad at all. As described in the forums, the firmware is stable and, most importantly, fully working. This is what we will check.
Downloading firmware
Find the firmware image can be on the official website of the manufacturer firmware, or in the respective developers topic on XDA Developers forum. Gone are the days when all the files were laid on the private forums, file sharing, and the devil knows what resources. Now everything is open, clear and almost officially.
In our case, we are opening the CyanogenMod website, where we choose the appropriate model of the device in the left pane and move on to the load. Be careful, as some smartphones and tablets, depending on the modification are differences among the processors and their internal content, for example, the presence or absence of the IR port, 3G / 4G-module and other benefits. In our case, the P3110 and P3100 devices are different!
Installing an inappropriate firmware problems facing the system partition, will only “direct” remaking, that is at the service center. And in the worst case, we have to think about the SoC-chip replacement.
Installing Recovery
Any modern mobile device has a special boot mode called Recovery. It allows you to restore the device to install the update, make backups and basic operations with the mobile “hardware”. We will set an unofficial update, for this reason we need a modified Recovery.
For OC Android, there are two options: CWM (or Philz) and TWRP Recovery. What are the differences between these three modes? Every man to his own taste! They all contain roughly the same functionality, but are developed by different development teams and a variety of different nuances.
For example, TWRP allows you to open access to removable media when connected via USB, and even offers extended by ADB connection options and advanced compression “backup” system. A Philz Recovery TWRP built on the base and has a difference in the interface, and a pair of trifles. While ClockworkMod Recovery is more stable and has a great track record of supported devices.
However, the choice is not always the case. For each device, developed by a separate Recovery and it so happens that there is no user choice. In my case, the choice fell on the version of TWRP Recovery 2.8.7.0. Setting of this mode can be different variants, ranging from the official Recovery, Fastboot and ending programs and utilities for specific devices.
Load utility GooManager, select the additional menu item «Install OpenRecovery Script» and expect a miracle. You must first get ROOT rights and enable debug mode for developers parameters.
To verify the installation Recovery is necessary to simultaneously hold the following key combination: “inclusion” and “volume up”. And on some devices still and press the “Home” should be added. For details about a specific device can be found on the forums.
Installing firmware
If the installation of a modified recovery mode process has been successful, then we can move to the next – install the firmware. First, you need to charge the device by more than 60%, and even better at 100%. Otherwise, we are doomed to a fatal outcome. Then the downloaded image you want to move in the phone memory, whether it is a removable drive or internal memory, and from there to boot into Recovery mode and install the firmware. The concept is simple, you just repeated.
We take into the hands of the device, run it with the key combination “inclusion” and “Sound”, get into the menu system.
It is desirable to make a complete “backup” system to a flash card!
Next, you need to do data cleansing, visiting Wipe item with the name and selecting Advanced Wipe. This should be done for the normal functioning of the new components. This is especially important during installation of a new type or firmware version of the system increase.
Now we install the firmware. Go to the main menu, select Install, continue to find the downloaded package and push the fatal key. After that, we can only wait and hope for the successful completion of the process.
By the way, the installation or the firmware update can take up to 10-15 minutes, because everything depends on the components of the device and the installed system. If the process is delayed – it means that something went wrong … In our case, the process was successfully completed in 4 minutes. At this time, the screen will be described in the installation phase. The only pity is, the ability to create screenshots missing.
After all perfect gadget manipulation system prompts you to download or continue the installation components. You can go directly to the installation of the required patches or GAAPS. However, it is recommended to pre “net start” to briefly acquainted with the system and its operability. Suddenly she does not like us, and we decide to roll back or reinstall it.
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