The numbers are the manufacturing date. 1836 is week 36 of 2018. 2325 is week 25 of 2023, and 2311 is week 11 of 2023.
The problem you have is that the bootloader/firmware on your SD card is too old to recognise the new revision of 3B+ (other parts of the board has been revised, the BCM2738 hasn't).
If the OS is Bullseye or later, the usual apt update and apt full-upgrade should update the files on the card.
If it's an older OS (buster?) then you may need to update manually. There's a document about this. Read the last section Updating only the firmware for what you need to do.
The problem you have is that the bootloader/firmware on your SD card is too old to recognise the new revision of 3B+ (other parts of the board has been revised, the BCM2738 hasn't).
If the OS is Bullseye or later, the usual apt update and apt full-upgrade should update the files on the card.
If it's an older OS (buster?) then you may need to update manually. There's a document about this. Read the last section Updating only the firmware for what you need to do.
Statistics: Posted by rpdom — Fri Feb 02, 2024 12:18 am