diff --git a/doc/compile.md b/doc/compile.md
index 2496598..55d1ded 100644
--- a/doc/compile.md
+++ b/doc/compile.md
@@ -1,20 +1,54 @@
-## Compile
-
-```
-make menuconfig
-scripts/diffconfig.sh > ../wpj428/config
-make download
-make -j $(nproc)
-```
-
-To inject a config file:
+## Fresh Compile
 
 ```bash
-# Append changes to bottom of .config
-cat config >> .config
-# Apply changes
-make defconfig
+# Reset everything
+make distclean
+
+# Choose a specific version and init
+git checkout openwrt-22.03
+git pull
+./scripts/feeds update -a
+./scripts/feeds install -a
+
+# Insert our additional files
+rm -rf files/
+cp -r ../wpj428/files ./
+
+# Choose the packages we want/need
+make menuconfig
+```
+
+Then activate:
+
+ - Luci -> Collections -> Luci (default)
+ - Luci -> Protocols -> luci-proto-modemmanager
+ - Luci -> App -> luci-app-sqm
+ - Luci -> App -> luci-app-openvpn
+ - Luci -> Themes -> OpenWRT
+ - Utilities -> qmi-utils (required by our script `promsignal`)
+ - Utilities -> strace
+ - Utilities -> Terminal -> Picocom
+
+Check that these packages were activated automatically:
+ - Kernel Modules -> USB -> kmod-usb-net-cdc-mbim
+ - Kernel Modules -> USB -> kmod-usb-net-cdc-ncm
+ - Network -> ModemManager
+ - Network -> tcpdump
+ - Utilities -> dbus
+
+```
 make download
 make -j $(nproc)
 ```
 
+The output is in `bin/targets/ipq40xx/generic/`:
+
+  - To restore this firmware from OpenWRT `openwrt-ipq40xx-generic-compex_wpj428-squashfs-sysupgrade.bin`
+  - To restore this firmware from MimoAP (the OEM firmware) `openwrt-ipq40xx-generic-compex_wpj428-squashfs-cpximg-6a04.bin`
+
+To restore it from OpenWRT:
+
+```
+scp firmware_image.bin root@192.168.1.1:/tmp
+sysupgrade -n -v /tmp/firmware_image.bin
+```