[Miscellaneous Android Development] sliper123:
SliPer ModRecovery and G1317D RootROM. What are they?

SliPer ModRecovery is a custom Andriod system recovery. G1317D RootROM is a custom ROM for Gigabyte GSmart G1317D smartphone with Dual-SIM support. Several versions of G1317D RootROM correspond to different builds, each designed for a specific region or reseller.

What are the differences between SliPer ModRecovery and stock recovery?

The only difference between SliPer ModRecovery and stock recovery is that during ROM installation process Gigabyte signature verification is disabled in SliPer ModRecovery. So you're able to install any stock/custom ROM (suitable for your device). The only restriction, while installing stock ROM (not custom!), is that BUILD_SW_PROJ field in update_ver.txt file of already installed ROM and BUILD_SW_PROJ field in update_ver.txt file inside update1.zip/update.zip package on SDCard should be equal.

What are the differences between G1317D RootROM and stock ROM?

In general, a custom ROM may differ from a stock ROM in everything ranging from the custom user interface to the modified kernel.

These are the differences of G1317D RootROM comparing to the stock ROM:

disabled BUILD_SW_PROJ check in the update script;

ROM is already rooted;

added BusyBox 1.19.4;

adbd runs with root permissions and "USB Debugging" is turned on for logging of the boot process by default;

G1317D RootROM preserves SliPer ModRecovery on ordinary boot for further use (if stock ROM is installed, on each ordinary boot recovery partition is being rewritten with the original recovery image formed by patching original boot image with binary diff file recovery-from-boot.p).

Interface and kernel are derived from the original ROM.

Will I lose the warranty after installing G1317D RootROM by using SliPer ModRecovery?

Before calling for service install G1317D RootROM for your region, then install original ROM for your region. This is required to restore original ROM and recovery. After that clear cache and erase userdata by using stock recovery, remove SDCard from the device.

How to install G1317D RootROM?

NO userdata will be erased during G1317D RootROM installation process, but it would be better to backup your valuable data anyway!

You should install smartphone drivers if they haven't been installed yet.

It's important that you DON'T need root privileges to install G1317D RootROM by using SliPer ModRecovery.

Download one of G1317D RootROMs:

G1317D-0.50.4_pl_cz.zip - based on the original ROM from Gigabyte official website http://www.gigabytecm.com/Eng/

G1317D-0.50.4_RUS.zip - based on the original ROM from Gigabyte official website http://www.gigabytecm.com/Russia/

Then copy update1.zip/update.zip from archive to the root of SDCard which will be used to update ROM.

Download ModRecovery_BootScript.zip and unpack it somewhere to your PC. This is a "script" for booting up smartphone with recovery.img in fastboot mode. "Script" file flasher.bat itself is located in ModRecovery_BootScript folder. Extract recovery.img suitable for your G1317D from previously copied to SDCard update1.zip/update.zip archive to ModRecovery_BootScript folder.

Then turn off your device, insert SDCard (with update1.zip/update.zip located in SDCard root directory) into it, turn the device into fastboot mode by holding volume down button + power button until blue LED blinks once. Then connect the device to PC, wait until fastboot mode drivers will be completely installed and run flasher.bat. Confirm the update. Smartphone will reboot once during the installation process and boot up in normal mode with SU and BusyBox installed after everything will be completed. Enjoy!

In order to check whether you've got SliPer ModRecovery properly installed, delete/move update1.zip/update.zip from the root of SDCard, reboot in recovery mode by holding volume up button + power button until blue LED blinks 3 times. If you get the following screen, then SliPer ModRecovery has been installed properly:

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ROMs and ModRecoveries for other Gigabyte Dual-SIM Android phones:

[ROM][RECOVERY]SliPer ModRecovery + G1310 RootROM

[ROM][RECOVERY]SliPer ModRecovery + G1315 RootROM

[ROM][RECOVERY]SliPer ModRecovery + G1345 RootROM

[ROM][RECOVERY]SliPer ModRecovery + G1355 RootROM