diff --git a/README.md b/README.md
index 3b3bcf9..1f42220 100644
--- a/README.md
+++ b/README.md
@@ -2,22 +2,11 @@
 
 ## Installation
 
-Recommended: [venv](https://docs.python.org/3/library/venv.html).
-
-```shell
-# Optional
-$ python3 -m venv .venv
-$ source .venv/bin/activate
-
-$ pip3 install -r requirements.txt
-```
+1. https://nixos.org/download/
+2. direnv
 
 Your PC timezone is important for esphome schedules, as they will use compiler's
-timezone when syncing the clock (NTP). Consider changing it to your home TZ:
-
-```
-# dpkg-reconfigure tzdata
-```
+timezone when syncing the clock (NTP).
 
 ## Compiling
 
@@ -27,27 +16,18 @@ $ cp -i templates/secrets.yaml{.sample,}
 
 # Edit both secrets.yaml files.
 
-# Optional
-$ source .venv/bin/activate
-
 $ ./reflash.sh compile ''
 ```
 
 ## Running
 
 ```
-# Optional
-$ source .venv/bin/activate
-
 $ ./reflash.sh
 ```
 
 or
 
 ```
-# Optional
-$ source .venv/bin/activate
-
 $ esphome run file.yaml
 ```
 
diff --git a/flake.nix b/flake.nix
index 5b6f748..278ea1c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -16,6 +16,7 @@
         default = pkgs.mkShell {
           buildInputs = with pkgs; [
             esphome
+            cc2538-bsl
           ];
 
           shellHook = ''
diff --git a/templates/tubeszb-coordinator.yaml b/templates/tubeszb-coordinator.yaml
index ec15378..af8c5e1 100644
--- a/templates/tubeszb-coordinator.yaml
+++ b/templates/tubeszb-coordinator.yaml
@@ -6,13 +6,13 @@
 #
 # Binary files can be found at:
 # https://github.com/Koenkk/Z-Stack-firmware/releases
-# Latest flashed copy can be found in zigbee-coordinator directory.
+# Latest flashed copy can be found in tubeszb/ directory.
 #
-# Firmware flashing tool:
-# https://github.com/JelmerT/cc2538-bsl
-#
-# Consider using Docker for flashing:
+# Coordinator flashing instructions:
 # https://www.zigbee2mqtt.io/guide/adapters/flashing/flashing_via_cc2538-bsl.html
+#
+# Router flashing instructions:
+# https://github.com/tube0013/tube_gateways/tree/8cf2d2998602d0d89ff2cd9ce06dbd98997e223d/models/current/tubeszb-router#flashing-the-router
 
 esphome:
   name: "zigbee-coordinator-ch${channel}"
diff --git a/zigbee-coordinator/CC1352P2_CC2652P_launchpad_coordinator_20230507.zip b/tubeszb/CC1352P2_CC2652P_launchpad_coordinator_20230507.zip
similarity index 100%
rename from zigbee-coordinator/CC1352P2_CC2652P_launchpad_coordinator_20230507.zip
rename to tubeszb/CC1352P2_CC2652P_launchpad_coordinator_20230507.zip
diff --git a/tubeszb/CC1352P2_CC2652P_launchpad_router_20221102.zip b/tubeszb/CC1352P2_CC2652P_launchpad_router_20221102.zip
new file mode 100644
index 0000000..19628ba
Binary files /dev/null and b/tubeszb/CC1352P2_CC2652P_launchpad_router_20221102.zip differ