Doosan D35S-5 Service Manual page 294

Error Message:
If an error occurred during upgrade ECU, the following message will be displayed.
Caution for processing
The time required to complete an ECU upgrade will vary. Menus and buttons are all disabled during the
upgrade process.
Following instructions should be kept during the upgrade process, otherwise ECU may be damaged.
Do not start the engine or turn the ignition key OFF.
Do not operate any vehicle accessories during the upgrade process.
Do not disconnect G-scan during the upgrade process.
Review the TSB (Technical Service Bulletin) before upgrade, as upgrade procedures can be different
for each event.
D439E Service Manual
<Figure 12: ECU Auto Upgrade – Error>
CAUTION
292 5. Service Tool