GT-I9100G Bootloader Interface


On the devices we looked at, the first stage is a signed xloader, and there is some source code for it, so we might manage to find full and corresponding source code for some versions of the xloader having been shipped on the devices.

It most probably go fetch the second stages from the SBL1 partition.

Here's the output of the bootloader on UART at boot:

Texas Instruments X-Loader 1.41 (Mar 20 2012 - 11:20:26)
Uboot-loading from Emmc
Starting OS Bootloader from EMMC ...

Note that all the strings here are from xloader, and that we didn't find any traces of u-boot anywhere yet.
As xloader is typically used to boot u-boot, Samsung probably didn't bother to change the "Uboot-loading from Emmc" string when using it with another second stage.

We didn't manage to find how to get a shell in this bootloader yet.

Issues with heimdall with the Android 2.3.6 bootloader on I9100G_CNH_CHN

On some laptops or desktops, heimdall works fine, while on some other it doesn't. The issue is that if heimdall doesn't work, your device could be stuck in "pc screen" mode, and you might not be able to recover from it.

On the following laptop it worked fine: On the following desktop heimdall didn't work, which made the device stuck in "pc screen" mode: It might be related to