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How to recover an ERROR01 : NO CA FOUND - on DM800/DM8K
This summary "tutorial" to explain how to fix a DM8000 not booting with the code "ERROR01 : NO CA FOUND" on the screen.

Cause of the error:
- bad flash
- official image flashed

-> ERR01 : NO CA FOUND

What doesn't work anymore:
- no boot
- no network connection
- no possible image upgrade
- DreamUp unable to upgrade even with serial cable

Solution:
1) Use DreamUp 1.3.3 with serial (null modem) cable
2) Choose COM1, connect, power ON DM800 and wait
3) After a few seconds the DM8000 screen will come back with an IP address
4) Type in that address in IE
5) Flash first a BootLoader (ex: 72R1)
6) reboot DM8000 and hold power button
7) Wait for IP to appear on DM800 screen
8)Type in that address in IE
9) Flash your desired image



If still not possible.
- remove power
- press power button
- put power back
- wait for the screen to show a DHCP given IP address
- try to flash via Network on that address

or

- Remove power plug
- Wait 30 sec
- Put power back and immediately hold the power on button