vcm2-numer seryjny.pdf

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I have figured out how to change the serial number of the VCM2 as well as enter test mode, and get a root shell on it.

You’ll need a microSD card (referenced as SD card) in the VCM for this to work.

1. Use IDS 86.

2. Recover your VCM2.

a. Describing how to recover is beyond the scope of this post. Search the forums for instructions.

3. After your VCM2 reboots post recovery it should be at VCM2 FW version 2.1.1.5.

4. Wait about 90 seconds after the VCM2 beeps before proceeding. We are waiting for the SD card to be populated.

5. Unplug the VCM2 and eject the SD card.

6. Mount the SD card with a linux machine.

7. On the SD card open ‘apps/vci-diags/hwtest-scripts/ self-test.sh’ for editing.

8. Add the following line to the file:

touch /etc/vci/config/testmode

9. Cleanly unmount the SD card and insert it back into the VCM2

10. Plug the VCM2 into the computer via USB and wait 90 seconds past beep before proceeding.

11. Launch IDS.

12. Go to system utilities

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13. Select ‘Launch Monitor Tool’ and confirm on the pop up.

14. Select ‘Run System Diagnostics’ > ‘Next’ > ‘Test a VCM II Module’ > ‘Next’

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15. Once the test completes unplug and replug the VCM2 into the computer.

16. Wait about 15 seconds past when the VCM2 beeps and point your browser to

http://192.168.171.2

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You are now in the test mode web server.

a. To set a new serial number select ‘Set New Serial Number’ and proceed with serial number setting.

The default serial number is: 1211-31605352

b. To get a root shell Telnet to 192.168.171.2 you will be dropped to a root shell without providing login credentials.

c. To stay in testmode at next reboot select ‘Set Repair Test Mode’. This has to be done once per boot or you will have to

go through this whole process to re-enable test mode.

To those who would go poking around, tread carefully. I accidentally ran cgi-bin/total-reflash and wiped my VCM2.

I think the boot loader is still intacted and I suspect it's available on pins 24 & 25 of the HDL26 connector.

If anyone would be so kind, once at the root shell please run:

Code:

bs=512

if=/dev/mtd0 of=/mnt/sd/mtd0

if=/dev/mtd1 of=/mnt/sd/mtd1

if=/dev/mtd2 of=/mnt/sd/mtd2

if=/dev/mtd3 of=/mnt/sd/mtd3

if=/dev/mtd4 of=/mnt/sd/mtd4

if=/dev/mtd5 of=/mnt/sd/mtd5

if=/dev/mtd6 of=/mnt/sd/mtd6

if=/dev/mtd7 of=/mnt/sd/mtd7

if=/dev/mtd8 of=/mnt/sd/mtd8

if=/dev/mtd9 of=/mnt/sd/mtd9

if=/dev/mtd10 of=/mnt/sd/mtd10

if=/dev/mtd11 of=/mnt/sd/mtd11

if=/dev/mtd12 of=/mnt/sd/mtd12

and then send me the mtd* files so I can reflash my VCM2.

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vcm2-numer seryjny.pdf

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