The following four documents related to the OMAP-L138 SOM-M1 product have been updated on the downloads site:
 - OMAP-L138 SOM-M1 Errata rev 11/13/18
 - OMAP-L138 SOM-M1 Product Change Notification rev I
 - AM1808/OMAP-L138 SOM-M1 SPI Flash Recovery, Application Note 556 rev C
 - AM1808/OMAP-L138 Linux User Guide rev D

You can download these documents from the OMAP-L138 SOM-M1 (EVM) product page on Logic PD's support site.