diff --git a/README.md b/README.md
index 39fdd9c..78e14d5 100644
--- a/README.md
+++ b/README.md
@@ -33,12 +33,23 @@ set ipaddr 192.168.1.1
 set serverip 192.168.1.2
 ping ${serverip}
 sf probe
-tftpboot 0x84000000 openwrt-ipq40xx-compex_wpj428-squashfs-sysupgrade.bin
+tftpboot 0x84000000 openwrt-ipq40xx-generic-compex_wpj428-squashfs-sysupgrade.bin
 sf erase 0x00180000 +$filesize
 sf write 0x84000000 0x00180000 $filesize
 bootipq
 ```
 
+## Compile
+
+```
+make menuconfig
+scripts/diffconfig.sh > ../wpj428/config
+make download
+make -j $(nproc)
+```
+
+
+
 ## Logs
 
 uboot logs:
@@ -121,3 +132,4 @@ eth0
 ## Sources
 
   - [All the commits in OpenWRT about the WPJ428](https://git.openwrt.org/?p=openwrt%2Fopenwrt.git&a=search&h=HEAD&st=commit&s=WPJ428)
+  - https://openwrt.org/docs/guide-developer/build-system/use-buildsystem