diff --git a/enviro/__init__.py b/enviro/__init__.py
index 236f280..b279b69 100644
--- a/enviro/__init__.py
+++ b/enviro/__init__.py
@@ -180,6 +180,9 @@ def connect_to_wifi():
   wlan = network.WLAN(network.STA_IF)
   wlan.active(True)
   wlan.connect(wifi_ssid, wifi_password)
+  if config.wifi_ifconfig is not None:
+    logging.info(f"> using manual ip config {config.wifi_ifconfig}")
+    wlan.ifconfig(config.wifi_ifconfig)
 
   start = time.ticks_ms()
   while time.ticks_diff(time.ticks_ms(), start) < 30000:
diff --git a/enviro/config_template.py b/enviro/config_template.py
index a345cc0..91b68a7 100644
--- a/enviro/config_template.py
+++ b/enviro/config_template.py
@@ -11,6 +11,7 @@
 # network access details
 wifi_ssid = None
 wifi_password = None
+wifi_ifconfig = None
 
 # how often to wake up and take a reading (in minutes)
 reading_frequency = 15
diff --git a/enviro/html/header.html b/enviro/html/header.html
index 070ca6b..1021624 100644
--- a/enviro/html/header.html
+++ b/enviro/html/header.html
@@ -100,6 +100,12 @@
 
       #done pre {max-height: 20rem; overflow: scroll; background-color: var(--black); border-radius: var(--input-radius); color: white; padding: 1rem;}
 
+      details {user-select: none;}
+      details>summary span.icon {transition: all 0.5s; margin-left: auto;}
+      details[open] summary span.icon { transform: rotate(90deg); }
+      summary {display: flex; cursor: pointer; }
+      summary::-webkit-details-marker {display: none;}
+
       /* adjustments for viewing on phone rather than tablet or computer */
       @media (max-width: 680px) {
         #intro {grid-template-columns: 1fr;}
diff --git a/enviro/html/provision-step-2-wifi.html b/enviro/html/provision-step-2-wifi.html
index ac1b458..da50d96 100644
--- a/enviro/html/provision-step-2-wifi.html
+++ b/enviro/html/provision-step-2-wifi.html
@@ -28,6 +28,32 @@ <h2>Enter your WiFi password so that we can <s>download pictures of cats</s> upl
     <fieldset>
       <input id="wifi_password" name="wifi_password" type="text" value="{{config.wifi_password}}" placeholder="e.g. Cats4lyfe&lt;3!" autocapitalize="none" autocorrect="off" autocomplete="off" spellcheck="false" />
     </fieldset>
+
+    <details>
+      <summary><h2>Advanced configuration</h2>
+        <span class="icon">➔</span>
+      </summary>
+      <p>
+        <aside>Only fill in the following fields if you know what you're doing. Leaving them empty works best in most cases, and they are generally only required if your Wifi network does not have a DHCP service running.</aside>
+        <aside>MAC address: {{mac_address}}</aside>
+        <h2>IPv4 address:</h2>
+        <fieldset>
+          <input id="ipv4_address" name="ipv4_address" type="text" value="{{config.wifi_ifconfig[0]}}" placeholder="e.g. 192.168.0.42" autocapitalize="none" autocorrect="off" autocomplete="off" spellcheck="false" />
+        </fieldset>
+        <h2>Netmask:</h2>
+        <fieldset>
+          <input id="ipv4_netmask" name="ipv4_netmask" type="text" value="{{config.wifi_ifconfig[1]}}" placeholder="e.g. 255.255.255.0" autocapitalize="none" autocorrect="off" autocomplete="off" spellcheck="false" />
+        </fieldset>
+        <h2>Gateway:</h2>
+        <fieldset>
+          <input id="ipv4_gateway" name="ipv4_gateway" type="text" value="{{config.wifi_ifconfig[2]}}" placeholder="e.g. 255.255.255.1" autocapitalize="none" autocorrect="off" autocomplete="off" spellcheck="false" />
+        </fieldset>
+        <h2>DNS server:</h2>
+        <fieldset>
+          <input id="dns_server" name="dns_server" type="text" value="{{config.wifi_ifconfig[3]}}" placeholder="e.g. 8.8.8.8" autocapitalize="none" autocorrect="off" autocomplete="off" spellcheck="false" />
+        </fieldset>
+      </p>
+    </details>
   </form>
 
   <nav>
diff --git a/enviro/provisioning.py b/enviro/provisioning.py
index 1baaef2..28e1ebf 100644
--- a/enviro/provisioning.py
+++ b/enviro/provisioning.py
@@ -1,4 +1,4 @@
-import network, os, json, time, machine, sys
+import network, os, json, time, machine, sys, ubinascii
 
 import enviro.helpers as helpers
 import enviro
@@ -42,6 +42,8 @@ def write_config():
 # put board into access point mode
 logging.info("> going into access point mode")
 ap = access_point(f"Enviro {model[:1].upper()}{model[1:]} Setup")
+wlan = network.WLAN(network.AP_IF)
+mac_address = ubinascii.hexlify(wlan.config('mac'), ":").decode().upper()
 logging.info("  -", ap.ifconfig()[0])
 
 
@@ -82,6 +84,17 @@ def provision_step_2_wifi(request):
   if request.method == "POST":
     config.wifi_ssid = request.form["wifi_ssid"]
     config.wifi_password = request.form["wifi_password"]
+    ipv4 = request.form["ipv4_address"]
+    if "." in ipv4:  # Something was entered. Save manual config
+      wifi_ifconfig = [
+        ipv4,
+        request.form["ipv4_netmask"], 
+        request.form["ipv4_gateway"], 
+        request.form["dns_server"],
+      ]
+      config.wifi_ifconfig = tuple(wifi_ifconfig)
+    else:
+      config.wifi_ifconfig = None
     write_config()
     return redirect(f"http://{DOMAIN}/provision-step-3-logging")
   else:
diff --git a/install-on-device-fs b/install-on-device-fs
index 79c0abd..9f3b302 100755
--- a/install-on-device-fs
+++ b/install-on-device-fs
@@ -34,8 +34,8 @@ function create_directory {
 function copy {
   for file in $1
   do
-    echo -n "> copying file $file"
-    mpremote connect ${DEVICE} cp $file $2 > /dev/null
+    echo "> copying file $file"
+    mpremote connect ${DEVICE} cp $file $2$(basename $file)
     if [ $? -eq 0 ] ; then
       echo " .. done!"
     else