diff --git a/build.properties b/build.properties
index 21bc010ca..45512ff0d 100644
--- a/build.properties
+++ b/build.properties
@@ -2,7 +2,7 @@ minecraft.version=1.10.2
 minecraft.mappings=snapshot_20160720
 forge.version=12.18.3.2221
 
-oc.version=1.7.2
+oc.version=1.7.3
 
 ae2.version=rv4-alpha-11
 bc.version=7.0.9
diff --git a/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua b/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua
index 8fd2749a6..ec28ad8c7 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua
@@ -15,7 +15,7 @@ if #args == 0 then
   while true do
     if has_prompt then
       while not tty.isAvailable() do
-        event.pull("term_available", .5)
+        event.pull(.5, "term_available")
       end
       if needs_profile then -- first time run AND interactive
         needs_profile = nil
diff --git a/src/main/resources/assets/opencomputers/loot/openos/init.lua b/src/main/resources/assets/opencomputers/loot/openos/init.lua
index 0e7b102a6..ec7a03691 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/init.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/init.lua
@@ -1,18 +1,15 @@
 do
-  local loadfile = load([[return function(file)
-    local pc,cp = computer or package.loaded.computer, component or package.loaded.component
-    local addr, invoke = pc.getBootAddress(), cp.invoke
-    local handle, reason = invoke(addr, "open", file)
-    assert(handle, reason)
+  local addr, invoke = computer.getBootAddress(), component.invoke
+  local function loadfile(file)
+    local handle = assert(invoke(addr, "open", file))
     local buffer = ""
     repeat
-      local data, reason = invoke(addr, "read", handle, math.huge)
-      assert(data or not reason, reason)
+      local data = invoke(addr, "read", handle, math.huge)
       buffer = buffer .. (data or "")
     until not data
     invoke(addr, "close", handle)
     return load(buffer, "=" .. file, "bt", _G)
-  end]], "=loadfile", "bt", _G)()
+  end
   loadfile("/lib/core/boot.lua")(loadfile)
 end
 
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/core/boot.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/boot.lua
index 8013be6fe..904b7e905 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/core/boot.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/core/boot.lua
@@ -1,7 +1,7 @@
 -- called from /init.lua
 local raw_loadfile = ...
 
-_G._OSVERSION = "OpenOS 1.7.2"
+_G._OSVERSION = "OpenOS 1.7.3"
 
 local component = component
 local computer = computer
@@ -73,13 +73,9 @@ end
 status("Booting " .. _OSVERSION .. "...")
 
 -- Custom low-level dofile implementation reading from our ROM.
-local loadfile = function(file)
-  status("> " .. file)
-  return raw_loadfile(file)
-end
-
 local function dofile(file)
-  local program, reason = loadfile(file)
+  status("> " .. file)
+  local program, reason = raw_loadfile(file)
   if program then
     local result = table.pack(pcall(program))
     if result[1] then
@@ -112,11 +108,11 @@ do
   package.loaded.component = component
   package.loaded.computer = computer
   package.loaded.unicode = unicode
-  package.loaded.buffer = assert(loadfile("/lib/buffer.lua"))()
-  package.loaded.filesystem = assert(loadfile("/lib/filesystem.lua"))()
+  package.loaded.buffer = dofile("/lib/buffer.lua")
+  package.loaded.filesystem = dofile("/lib/filesystem.lua")
 
   -- Inject the io modules
-  _G.io = assert(loadfile("/lib/io.lua"))()
+  _G.io = dofile("/lib/io.lua")
 end
 
 status("Initializing file system...")
diff --git a/src/main/resources/assets/opencomputers/lua/bios.lua b/src/main/resources/assets/opencomputers/lua/bios.lua
index 5449b963a..e2f1f8f90 100644
--- a/src/main/resources/assets/opencomputers/lua/bios.lua
+++ b/src/main/resources/assets/opencomputers/lua/bios.lua
@@ -1,61 +1,64 @@
-local component_invoke = component.invoke
-function boot_invoke(address, method, ...)
-  local result = table.pack(pcall(component_invoke, address, method, ...))
-  if not result[1] then
-    return nil, result[2]
-  else
-    return table.unpack(result, 2, result.n)
-  end
-end
-
--- backwards compatibility, may remove later
-local eeprom = component.list("eeprom")()
-computer.getBootAddress = function()
-  return boot_invoke(eeprom, "getData")
-end
-computer.setBootAddress = function(address)
-  return boot_invoke(eeprom, "setData", address)
-end
-
+local init
 do
-  local screen = component.list("screen")()
-  local gpu = component.list("gpu")()
-  if gpu and screen then
-    boot_invoke(gpu, "bind", screen)
+  local component_invoke = component.invoke
+  local function boot_invoke(address, method, ...)
+    local result = table.pack(pcall(component_invoke, address, method, ...))
+    if not result[1] then
+      return nil, result[2]
+    else
+      return table.unpack(result, 2, result.n)
+    end
   end
-end
-local function tryLoadFrom(address)
-  local handle, reason = boot_invoke(address, "open", "/init.lua")
-  if not handle then
-    return nil, reason
+
+  -- backwards compatibility, may remove later
+  local eeprom = component.list("eeprom")()
+  computer.getBootAddress = function()
+    return boot_invoke(eeprom, "getData")
   end
-  local buffer = ""
-  repeat
-    local data, reason = boot_invoke(address, "read", handle, math.huge)
-    if not data and reason then
+  computer.setBootAddress = function(address)
+    return boot_invoke(eeprom, "setData", address)
+  end
+
+  do
+    local screen = component.list("screen")()
+    local gpu = component.list("gpu")()
+    if gpu and screen then
+      boot_invoke(gpu, "bind", screen)
+    end
+  end
+  local function tryLoadFrom(address)
+    local handle, reason = boot_invoke(address, "open", "/init.lua")
+    if not handle then
       return nil, reason
     end
-    buffer = buffer .. (data or "")
-  until not data
-  boot_invoke(address, "close", handle)
-  return load(buffer, "=init")
-end
-local init, reason
-if computer.getBootAddress() then
-  init, reason = tryLoadFrom(computer.getBootAddress())
-end
-if not init then
-  computer.setBootAddress()
-  for address in component.list("filesystem") do
-    init, reason = tryLoadFrom(address)
-    if init then
-      computer.setBootAddress(address)
-      break
+    local buffer = ""
+    repeat
+      local data, reason = boot_invoke(address, "read", handle, math.huge)
+      if not data and reason then
+        return nil, reason
+      end
+      buffer = buffer .. (data or "")
+    until not data
+    boot_invoke(address, "close", handle)
+    return load(buffer, "=init")
+  end
+  local reason
+  if computer.getBootAddress() then
+    init, reason = tryLoadFrom(computer.getBootAddress())
+  end
+  if not init then
+    computer.setBootAddress()
+    for address in component.list("filesystem") do
+      init, reason = tryLoadFrom(address)
+      if init then
+        computer.setBootAddress(address)
+        break
+      end
     end
   end
+  if not init then
+    error("no bootable medium found" .. (reason and (": " .. tostring(reason)) or ""), 0)
+  end
+  computer.beep(1000, 0.2)
 end
-if not init then
-  error("no bootable medium found" .. (reason and (": " .. tostring(reason)) or ""), 0)
-end
-computer.beep(1000, 0.2)
-init()
\ No newline at end of file
+init()
diff --git a/src/main/scala/li/cil/oc/client/renderer/PetRenderer.scala b/src/main/scala/li/cil/oc/client/renderer/PetRenderer.scala
index 2cf536048..c279df5d5 100644
--- a/src/main/scala/li/cil/oc/client/renderer/PetRenderer.scala
+++ b/src/main/scala/li/cil/oc/client/renderer/PetRenderer.scala
@@ -34,7 +34,8 @@ object PetRenderer {
     "23c7ed71-fb13-4abe-abe7-f355e1de6e62" ->(0.3, 0.3, 1.0), // LizzyTheSiren
     "076541f1-f10a-46de-a127-dfab8adfbb75" ->(0.2, 1.0, 0.1), // vifino
     "e7e90198-0ccf-4662-a827-192ec8f4419d" ->(0.0, 0.2, 0.6), // Izaya
-    "f514ee69-7bbb-4e46-9e94-d8176324cec2" ->(0.098, 0.471, 0.784) // Wobbo
+    "f514ee69-7bbb-4e46-9e94-d8176324cec2" ->(0.098, 0.471, 0.784), // Wobbo
+    "f812c043-78ba-4324-82ae-e8f05c52ae6e" ->(0.1, 0.8, 0.5) // payonel
   )
 
   private val petLocations = com.google.common.cache.CacheBuilder.newBuilder().