diff --git a/FunKey/board/funkey/rootfs-overlay/etc/u-boot.env b/FunKey/board/funkey/rootfs-overlay/etc/u-boot.env
index 82fb056..3b9fa4f 100644
--- a/FunKey/board/funkey/rootfs-overlay/etc/u-boot.env
+++ b/FunKey/board/funkey/rootfs-overlay/etc/u-boot.env
@@ -1,14 +1,19 @@
-args_mmc=setenv bootargs console=ttyS0,115200 panic=5 rootwait fbcon=map:10 fbcon=font:VGA8x8 vt.global_cursor_default=0 root=/dev/mmcblk0p${bootpart} rootfstype=ext4 rootflags=commit=120,data=writeback,barrier=0,journal_async_commit rw quiet
+args_mmc=setenv bootargs console=ttyS0,115200 panic=5 rootwait fbcon=map:10 fbcon=font:VGA8x8 vt.global_cursor_default=0 root=/dev/mmcblk0p${bootpart} rootfstype=ext4 rootflags=commit=120,data=writeback,barrier=0,journal_async_commit ${rw} quiet
 baudrate=115200
-bootcmd=run getbootpart; run args_mmc; run loadfdt; run loadimage; bootz ${loadaddr} - ${fdtaddr}
+bootcmd=run getbootpart; run check_keys; if test ${found} = 1; then setenv bootpart 1; fi; run args_mmc; run loadfdt; run loadimage; bootz ${loadaddr} - ${fdtaddr}
 bootdelay=0
+check_keys=run set_pullups; setenv found 0; setenv timeout ${delay}; while test ${timeout} > 0; do run read_keys; if test ${keys} = f83f; then setenv found 1; setenv timeout 0; setenv rw ro; else setexpr timeout ${timeout} - 1; fi; done
 console=ttyS0,115200
+delay=1
 fdt_high=0xffffffff
 fdtaddr=0x41800000
 getbootpart=part list mmc 0 -bootable bootpart
 loadaddr=0x41000000
 loadfdt=load mmc 0:${bootpart} ${fdtaddr} /boot/sun8i-v3s-funkey.dtb
 loadimage=load mmc 0:${bootpart} ${loadaddr} /boot/zImage
+read_keys=i2c read 20 0 2 1c20500; setexpr.w keys *1c20500
+rw=rw
+set_pullups=i2c mw 20 46 df; i2c mw 20 47 f8
 stderr=serial@01c28000
 stdin=serial@01c28000
 stdout=serial@01c28000
diff --git a/Recovery/board/funkey/rootfs-overlay/etc/u-boot.env b/Recovery/board/funkey/rootfs-overlay/etc/u-boot.env
index 82fb056..3b9fa4f 100644
--- a/Recovery/board/funkey/rootfs-overlay/etc/u-boot.env
+++ b/Recovery/board/funkey/rootfs-overlay/etc/u-boot.env
@@ -1,14 +1,19 @@
-args_mmc=setenv bootargs console=ttyS0,115200 panic=5 rootwait fbcon=map:10 fbcon=font:VGA8x8 vt.global_cursor_default=0 root=/dev/mmcblk0p${bootpart} rootfstype=ext4 rootflags=commit=120,data=writeback,barrier=0,journal_async_commit rw quiet
+args_mmc=setenv bootargs console=ttyS0,115200 panic=5 rootwait fbcon=map:10 fbcon=font:VGA8x8 vt.global_cursor_default=0 root=/dev/mmcblk0p${bootpart} rootfstype=ext4 rootflags=commit=120,data=writeback,barrier=0,journal_async_commit ${rw} quiet
 baudrate=115200
-bootcmd=run getbootpart; run args_mmc; run loadfdt; run loadimage; bootz ${loadaddr} - ${fdtaddr}
+bootcmd=run getbootpart; run check_keys; if test ${found} = 1; then setenv bootpart 1; fi; run args_mmc; run loadfdt; run loadimage; bootz ${loadaddr} - ${fdtaddr}
 bootdelay=0
+check_keys=run set_pullups; setenv found 0; setenv timeout ${delay}; while test ${timeout} > 0; do run read_keys; if test ${keys} = f83f; then setenv found 1; setenv timeout 0; setenv rw ro; else setexpr timeout ${timeout} - 1; fi; done
 console=ttyS0,115200
+delay=1
 fdt_high=0xffffffff
 fdtaddr=0x41800000
 getbootpart=part list mmc 0 -bootable bootpart
 loadaddr=0x41000000
 loadfdt=load mmc 0:${bootpart} ${fdtaddr} /boot/sun8i-v3s-funkey.dtb
 loadimage=load mmc 0:${bootpart} ${loadaddr} /boot/zImage
+read_keys=i2c read 20 0 2 1c20500; setexpr.w keys *1c20500
+rw=rw
+set_pullups=i2c mw 20 46 df; i2c mw 20 47 f8
 stderr=serial@01c28000
 stdin=serial@01c28000
 stdout=serial@01c28000