User manual for single-phase meter
23
12 Firmware Upgrade
Meter and communication module firmware can be upgraded remotely and/or locally.
Firmware upgrade will not work in meter and module until the new version of firmware is
uploaded into the meter completely. The meter records the event log as the firmware update.
The meter is fully compliant with the upgrade process defined in the DLMS standard:
• Step 1: Get Image Block Size.
• Step 2: Client initiates Image transfer.
• Step 3: Client transfers Image Blocks.
• Step 4: Client checks completeness of the Image.
• Step 5: Server verifies the Image (Initiated by the client or on its own).
• Step 6: Client checks the information on the images to activate.
• Step 7: Server activates the Image(s) (Initiated by the client or on its own).
After writing the firmware into meter, meter should check all steps right or not, if the CRC of
the firmware is correct, then can update new firmware.
If result of checking authenticity is negative, the meter will reject to upgrade.
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