Installation post edited

_posts/2023-12-31-installation.md

@@ -4,9 +4,22 @@ date: 2023-12-31 12:00:00
 categories: [Tutorial, Setup]
 tags: [openwrt, bootloader, terminal]     # TAG names should always be lowercase
 pin: true
+image:
+    path: /pics/Sercomm-Openwrt-Login.jpg
+    lqip: data:image/webp;base64,UklGRpoAAABXRUJQVlA4WAoAAAAQAAAADwAABwAAQUxQSDIAAAARL0AmbZurmr57yyIiqE8oiG0bejIYEQTgqiDA9vqnsUSI6H+oAERp2HZ65qP/VIAWAFZQOCBCAAAA8AEAnQEqEAAIAAVAfCWkAALp8sF8rgRgAP7o9FDvMCkMde9PK7euH5M1m6VWoDXf2FkP3BqV0ZYbO6NA/VFIAAAA
+    alt: After successful installation, you can log in via browser and configure the NA502(s) gateway.
 ---
 
 >This project is  under active development.
 {: .prompt-warning }
 
 ## Precondition check list
+
+## TFTP installation instructions
+You need to attach a serial console to the unpopulated 4-pin header near the LEDs. With the front of the device facing towards you, the pinout is: GND - TXD - ? - RXD. The settings are 57600 8N1 and you should see a bunch of messages immediately after start.
+
+- Using the terminal, select option `1. Load system code to SDRAM via TFTP.``
+- Put the `initramfs`` OpenWrt image on your TFTP server and boot it.
+- You can then use `SSH`` to connect to the OpenWrt running from RAM.
+- Transfer the OpenWrt `squashfs`` image to the device (for instance to /tmp/openwrt.bin)
+- Run `sysupgrade -n /tmp/openwrt.bin`` to install the image to your device.