Coolstream HD-1 Original Firmware

The software is divided into three pieces

mtd0.img == bootloader
mtd1.img == kernel
mtd2.img == filesystem

Initially, go into /etc/init.d/rcS file and hash the line so that Neutrino will not start:

from: /etc/init.d/start_neutrino
to: #/etc/init.d/start_neutrino

You can save the file and reboot the box

Connect your computer through the RS232 and run the HyperTerminal (standard settings with 115200 bps speed). Once the box is booting, click [enter] on the keyboard so the booting process will stop

you'll see:
HD1>

Now you can change the boot arguments:
HD1>setenv bootargs console=ttyRI0 mtdparts=cx2450xflash:512k(U-Boot),4096k(kernel),28160k(systemFS) root=mtd2 rootfstype=jffs2 rw mem=384M
and hit [enter]

now turn off the bootloader protection:
HD1>protect off all [enter]

You can run the system:
HD1>bootd

After a while you'll see the prompt on the console. Now you can copy the mtd0.img into /tmp folder using the ftp connection
When it's done, type on the console
#eraseall /dev/mtd0 [enter]

Now we're waiting until erase finishes and hit:
#cat /tmp/mtd0.img >/dev/mtd0 [enter]

When it's finished, you can reboot the box. After the reboot you have the prompt once again and you can start the next copy of mtd1.img and mtd2.img into /tmp folder

#eraseall /dev/mtd1
#cat /tmp/mtd1.img >/dev/mtd1

#eraseall /dev/mtd2
#cat /tmp/mtd2.img >/dev/mtd2

When it's finished, you can reboot the box and should see the "start wizzard"

Please note that changing a bootloader is a CRITICAL operation and shouldn't be done by unexperienced people. The situation is as with Kathrein UFS910, so if you accidentally remove the bootloader and don't update it, you will have a problem - the box will be useless