insert firmware files

README.md

@@ -1,3 +1,47 @@
-# Custom OpenWRT image for MR200
+# OpenWRT for TP-Link MR200v1
 
-Script `files/etc/rc.local` requires `curl` package.
+Turn on the device while pushing the WPS button until the WPS light turns
+on. At that point, the bootloaders integrated tftp client with the ip
+address of 192.168.1.1, tries to connect to a tftp server running at
+address 192.168.0.66 and getting the file named ArcherC2V1_tp_recovery.bin.
+so you need to be running a tftp server with the ip/netmask of
+192.168.0.66/23 and connect it to lan port1. It is vital that your firmware
+includes the bootloader at the very beginning (without any extra tp-link
+header) as the bootloader will start writing the firmware to flash with the
+starting address of 0x00000000.
+
+```bash
+cd firmware
+dd bs=512 obs=512 skip=1 count=256 if=Archer\ MR200v1_0.9.1_1.2_up_boot_v004a.0\ Build\ 180502\ Rel.53881n.bin of=ArcherMR200_bootloader.bin
+cat ArcherMR200_bootloader.bin openwrt-19.07.6-ramips-mt7620-ArcherMR200-squashfs-sysupgrade.bin > ArcherC2V1_tp_recovery.bin
+```
+
+More at MR200 OpenWRT
+[manual](https://openwrt.org/toh/tp-link/archer-mr200).
+
+## Revert to TP-Link stock firmware
+
+**Important:** Always revert back to the same version in which you switched
+from.
+
+```bash
+cd firmware
+dd bs=512 obs=512 skip=257 count=15744 if=Archer\ MR200v1_0.9.1_1.2_up_boot_v004a.0\ Build\ 180502\ Rel.53881n.bin of=extracted_firmware.bin
+scp extracted_firmware.bin root@openwrt:/tmp
+/usr/bin/ssh root@openwrt
+mtd -r write stock.bin firmware
+```
+
+## 4G signal LED integration
+
+OpenWRT does not enable working LED's for 4G signal by default. Manual
+method:
+
+```bash
+cd files
+scp -r root etc root@openwrt:/
+/usr/bin/ssh root@openwrt
+opkg update
+opkg install curl
+reboot
+```