Samsung GT-S5830 unknown baseband Not Solved with any tool
only Solved with GPGeMMC
Method.
1- Open GPGemmc tool
2- Sold Wire on Board
3- insert battery
4- insert Usb Cable (Recived With Box)
5- Click Detect Pin & Hold power button
6- When Pin out Detect Click Set pinouts
7- Select Dump File
8- And Click Write Button
Here is Dump File
GPGjtag_Samsung S5830_MIBIB-QCSBL-OEMSBL-EFS2-APP-UPCH_Sniper_04 - Download - 4shared - Mhannie Jay-Ar Monterey 
BR
Qaisar Mahmood
GPGEMMC_BOX truly one EMMC programmer