[Android Software/Hacking General [Developers Only]] remittor:
This instruction is only valid for modems without a digital signature (or modems with Qualcomm testing signature).

New modem has been tested on my phone Innos D10F (msm8228).

1. Install dependencies:

sudo apt-get install p7zip-full
sudo apt-get install lib32z1 lib32ncurses5
sudo apt-get install scons
sudo apt-get install libxml-parser-perl

2. Download all sources:

ROOTDIR=$HOME/dev/qcom/msm8626
mkdir -p $ROOTDIR
cd $ROOTDIR
git clone --branch "master" --progress -v "https://v2.pikacode.com/jsr-d10/qcom_msm8626_modem_proc.git" modem_proc
git clone --branch "master" --progress -v "https://v2.pikacode.com/jsr-d10/qcom_msm8626_adsp_proc.git" adsp_proc
git clone --branch "master" --progress -v "https://v2.pikacode.com/jsr-d10/qcom_msm8626_wcnss_proc.git" wcnss_proc

Mirror: magnet:?xt=urn:btih:61e8b8a520181ade801c251e5ec9352e33a7bb8c

3. Copy hexagon_tools_6.4.06.a.7z (this file is present in the torrent) into directory: $HOME/Downloads

4. Install HEXAGON Tools:

HEXAGON_ROOT=$HOME/Qualcomm/HEXAGON_Tools
7za x -y -o$HEXAGON_ROOT $HOME/Downloads/hexagon_tools_6.4.06.a.7z

5. Start modem build:

ROOTDIR=$HOME/dev/qcom/msm8626
cd $ROOTDIR/modem_proc/build/ms/
./build.sh 8626.gen.prod BUILD_ID=AAAAANAZ -k

For clean repo type:

ROOTDIR=$HOME/dev/qcom/msm8626
cd $ROOTDIR/modem_proc/build/ms/
./build.sh 8626.gen.prod BUILD_ID=AAAAANAZ --clean

6. Start ADSP build:

ROOTDIR=$HOME/dev/qcom/msm8626
cd $ROOTDIR/adsp_proc/build/ms/
./build.sh msm8x26 msm8x26_MPD BUILD_VER=1234 -k

7. WCNSS module is distributed without sources.

8. Download pil-splitter.py :

ROOTDIR=$HOME/dev/qcom/msm8626
cd $ROOTDIR
wget http://github.com/remittor/qcom-mbn-tools/raw/master/pil-splitter.py

9. Copy NON-HLOS.bin image from stock ROM to ROOTDIR directory. Rename NON-HLOS.bin to NON-HLOS-BASE.bin

10. Create file makeimg.sh into ROOTDIR directory and insert following content:

cd `dirname $0`
ROOTDIR=$(pwd)

TMPDIR=mbn_images
rm -rf $ROOTDIR/$TMPDIR
mkdir -p $ROOTDIR/$TMPDIR
cd $ROOTDIR/$TMPDIR

MODEM_STK=$ROOTDIR/NON-HLOS-BASE.bin
MODEM_NEW=$ROOTDIR/NON-HLOS.bin

BUILD_ID=AAAAANAZ
IMAGE_DIR=$ROOTDIR/modem_proc/build/ms/bin/$BUILD_ID
python $ROOTDIR/pil-splitter.py $IMAGE_DIR/qdsp6sw.mbn modem
python $ROOTDIR/pil-splitter.py $IMAGE_DIR/mba.mbn mba

BUILD_ID=AAAAAAAA
IMAGE_DIR=$ROOTDIR/adsp_proc/build/ms/bin/$BUILD_ID
python $ROOTDIR/pil-splitter.py $IMAGE_DIR/dsp2.mbn adsp

BUILD_ID=8x26
IMAGE_DIR=$ROOTDIR/wcnss_proc/build/ms/bin/$BUILD_ID
python $ROOTDIR/pil-splitter.py $IMAGE_DIR/wcnss.mbn wcnss

MODEMVERSTR=`grep -aohPz "QC_IMAGE_VERSION_STRING=.*" ./modem.*`
MODEMVER=`echo $MODEMVERSTR | cut -d "=" -f 2`
echo $MODEMVER > $ROOTDIR/ver_info.txt

MODEM_VDISK=/media/vdisk
cp -f $MODEM_STK $MODEM_NEW
sudo mkdir -p $MODEM_VDISK
sudo mount -t vfat $MODEM_NEW -o rw,umask=0000,shortname=lower $MODEM_VDISK
rm -f $MODEM_VDISK/image/modem.*
rm -f $MODEM_VDISK/image/mba.*
rm -f $MODEM_VDISK/image/adsp.*
rm -f $MODEM_VDISK/image/wcnss.*
cp -f ./* $MODEM_VDISK/image/
rm -f $MODEM_VDISK/verinfo/ver_info.txt
mkdir -p $MODEM_VDISK/verinfo
cp -f $ROOTDIR/ver_info.txt $MODEM_VDISK/verinfo/
sudo umount $MODEM_NEW

cd $ROOTDIR

11. Run script makeimg.sh (result: NON-HLOS.bin)

12. New image NON-HLOS.bin should flash in the relevant section of eMMC.

My test result:

[IMG="ookla SpeedTest"]https://2.bp.blogspot.com/-SKS5GL3FAd4/WBSAR9zBwnI/AAAAAAAAANM/H0Epj21n7gkoCYU3zcw6tciQAIQAMHgzgCLcB/s320/modem_jsr_speedtest_01.png[/IMG]