Samsung devices, the ones that shine out of the box. The ones that just have this solid (Not Premium there is a difference) feeling to them. The ones that have these software features on them that seem cool, but you rarely use them. Or the ones with Samsung's own CPU inside called "Exynos" (The one without LTE or DC-HSPA). So before you are looking at a shiny paperweight, I will tell you how you can prevent your device from being a paperweight.
1. So you are looking at your internal storage and you have either a lot or only a few megabytes. So you decide what to backup in TWRP or CWM recovery and you decide to deselect the box marked "EFS" and just backup "system" and "data". With other devices, you can just backup /system and /data, and with others you must backup /boot if you change kernels or Android versions. But backing up that <20 MB partition can actually save you from buying another device. This partition contains very unique information about your device, like carrier unlock code and IMEI. In some instances a lost of /efs can actually cause the power menu to be obsolete.
1. So you are looking at your internal storage and you have either a lot or only a few megabytes. So you decide what to backup in TWRP or CWM recovery and you decide to deselect the box marked "EFS" and just backup "system" and "data". With other devices, you can just backup /system and /data, and with others you must backup /boot if you change kernels or Android versions. But backing up that <20 MB partition can actually save you from buying another device. This partition contains very unique information about your device, like carrier unlock code and IMEI. In some instances a lost of /efs can actually cause the power menu to be obsolete.
2. Install Odin or Heimdall on a computer with the drivers. Sure you just rooted your device without a computer, and the first thing you should be doing is making a full Nandroid backup with all of the partitions checked except /cache. You always want to make sure you have the firmware your device came on when you rooted it on your PC. So if you have a Galaxy S4 on 4.3, then download the S4 firmware for your version of the S4.
3. Know which version of device you have. No, I'm not saying give someone your IMEI to find your device version, but look at what carrier your device came from. Look at what CPU it has. For example, you may say you have the Snapdragon S2 from AT&T. Well, which one? If your device is the i9300 you should only download firmwares for the i9300, nothing else. Same thing applies to every other device. Only download and flash firmware for your specific device.
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