===Serial downloader===
Generally speaking, serial downloader allows to download downloading a program image to the target over USB or UART connections. The following flow chart flowchart details the sequence of operations that are performed by BootROM in Serial Download mode (source ''Applications Processor Reference Manual''<ref name="IMX6ULRM"></ref>.
The following sections provides provide additional notes related to the use of Serial Downloader on SBC Lynx in order to warn the user about possible conflicts that may occur depending on what is connected to USBOTG1 port, UART1 and UART2 interfaces.
=====Ordering codes XUBx0000=====
UART1: The following chart depicts the general boot flow for this UART ordering codes. It is routed worth noticing that, before starting the actual serial downloading, the BootROM performs an attempt to connector J42 that boot from microSD card too, as the ''Manufacture mode'' is typically used enabled. This mode can be a convenient solution for console. UART2: this UART is routed to connector J46 that is dedicated different needs (for example, to optional [[Wireless_Module_(DWMrecover a board where U-Boot was erased accidentally from NOR flash)|DWM WiFi/Bluetooth module]]. Even if DWM is populated, no electrical conflicts occur.
USBOTG1[[File: this interface is connected to J55SBCLynx-boot-XUBx0000. The use png|thumb|center|600px|Boot flow of this port is user defined.ordering codes XUBx0000]]
''Manufacture mode'' Additional important information:*UART1: this UART is enabledrouted to connector J42 that is typically used for the console.*UART2: this UART is routed to connector J46 that is dedicated to optional [[Wireless_Module_(DWM)|DWM WiFi/Bluetooth module]]. Even if DWM is populated, no electrical conflicts occur.*USBOTG1: this interface is connected to J55. The use of this port is user-defined.
==References==
{{reflist}}
