diff --git a/README.md b/README.md
index 0332e19..bf44094 100644
--- a/README.md
+++ b/README.md
@@ -40,17 +40,11 @@ cd ~/klipper
 make clean
 make menuconfig
 make
+systemctl stop klipper
 make flash FLASH_DEVICE=/dev/ttyUSB0
+systemctl start klipper
 ```
 
-(seems to work better than `make flash FLASH_DEVICE=/dev/serial/by-id/usb-1a86_USB2.0-Serial-if00-port0`)
-
-Flashing fails sometimes.  Possible workarounds:
-
-- Klipper app is still talking to device?  Shutdown firmware and app first?
-- `/dev/ttypUSB0` and `/dev/serial/by-id/usb-1a86_USB2.0-Serial-if00-port0` are links to same device, but one works and other doesn't?
-- Try rebooting Pi
-
 ## /boot
 
 Copy `config.txt` and `cmdline.txt` from this repo.
diff --git a/boot/cmdline.txt b/boot/rpi-3b/cmdline.txt
similarity index 86%
rename from boot/cmdline.txt
rename to boot/rpi-3b/cmdline.txt
index 9d17680..0eca3f1 100644
--- a/boot/cmdline.txt
+++ b/boot/rpi-3b/cmdline.txt
@@ -1 +1 @@
-console=tty1 console=serial0,115200 root=PARTUUID=1ace4a06-02 rootfstype=ext4 fsck.repair=yes rootwait cfg80211.ieee80211_regdom=GB
\ No newline at end of file
+console=tty1 console=serial0,115200 root=PARTUUID=1ace4a06-02 rootfstype=ext4 fsck.repair=yes rootwait cfg80211.ieee80211_regdom=GB mitigations=off
diff --git a/boot/config.txt b/boot/rpi-3b/config.txt
similarity index 100%
rename from boot/config.txt
rename to boot/rpi-3b/config.txt