Rooted your Galaxy S4? Then stay with me on this guide, else feel free to skip this. Without root access, you won’t corrupt or delete EFS. So you are safe.
EFS folder is a place that store all Samsung Galaxy S4 important data like Wi-Fi, Bluetooth MAC address and IMEI (nv_data.bin). Therefore, don’t play with system level folders especially EFS folder if you don’t know what they are. For you info, your Galaxy S4 can’t make voice call if IMEI number is missing. Therefore, it is better to make a backup of Galaxy S4 EFS. Why? Install unstable or poorly cooked Galaxy S4 ROM might cause EFS partition to be corrupted or missing too.
Backup Samsung Galaxy S4 EFS
Samsung Galaxy S4 stock recovery provides limited functions when compare to custom recovery like ClockworkMod Recovery – CWM or Team Win Recovery Project – TWRP. It is better than nothing. As for advanced users, you will need to install ClockworkMod Recovery on Galaxy S4 to get more juice out of it. CWM and TWRP give you the ability to backup & restore with Nandroid, install custom ROM, kernel, modification and other more… It is a must installed tool for Galaxy S4 if you like to try out custom ROM.
Galaxy S4 CWM Recovery
PhilZ Touch 5 Recovery is one of my favourite custom recoveries for Samsung Galaxy Series. Why? exFAT partition support on external SD card. Yes, that’s the main reason that I always have PhilZ Touch CWM installed. And now it is on my Samsung Galaxy S4 GT-I9500 (PhilZ Touch CWM supports GT-I9505 too). PhilZ Touch is a CWM Advanced Edition that loaded with extra features compare to official ClockworkMod Recovery. As the name applies, it supports touch interface in addition to hardware keys. And it has Aroma File Manager built-in. Besides, it also has TWRP backup and restore support. Check out all the features below…
PhilZ Touch CWM for Samsung Galaxy S4
How to install ClockworkMod Recovery (CWM) on Samsung Galaxy S4 GT-I9500? Someone asked me just now. Well, current rooting methods for Galaxy S4 do not include CWM installation. Therefore, you need to install it manually. No worry, the CWM installation is like rooting Galaxy S4. In short, just use Odin software to install it. Not sure how to do so? Just read below steps by steps video guide to find out.
Err… Can’t wait for CF-Auto-Root anymore. Luckily, that’s not the only way to root Samsung Galaxy S4 GT-I9500. Yes, you can use other method to root Galaxy S4 I9500 like installing custom kernel. Most of the custom kernel will provide auto root function too. And Adam Kernel is one of the custom kernels that can do the trick. Really can’t survive without root access in Android world. Lot of tasks cannot be done without root access. Therefore, it’s time to root Galaxy S4 now.