diff --git a/GameData/BetterSRBs/BetterSRBs.version b/GameData/BetterSRBs/BetterSRBs.version
index eb72179..b958c07 100644
--- a/GameData/BetterSRBs/BetterSRBs.version
+++ b/GameData/BetterSRBs/BetterSRBs.version
@@ -10,7 +10,7 @@
   "VERSION": {
     "MAJOR": 1,
     "MINOR": 2,
-    "PATCH": 2,
+    "PATCH": 3,
     "BUILD": 0
   },
   "KSP_VERSION_MIN": {
diff --git a/GameData/BetterSRBs/Parts/Assets/MassiveSRB/MassiveSRB.mu b/GameData/BetterSRBs/Parts/Assets/MassiveSRB/MassiveSRB.mu
new file mode 100644
index 0000000..ceefac3
Binary files /dev/null and b/GameData/BetterSRBs/Parts/Assets/MassiveSRB/MassiveSRB.mu differ
diff --git a/GameData/BetterSRBs/Parts/Assets/MassiveSRB/solid_booster_cm.dds b/GameData/BetterSRBs/Parts/Assets/MassiveSRB/solid_booster_cm.dds
new file mode 100644
index 0000000..acdbf51
Binary files /dev/null and b/GameData/BetterSRBs/Parts/Assets/MassiveSRB/solid_booster_cm.dds differ
diff --git a/GameData/BetterSRBs/Parts/Assets/MassiveSRB/solid_booster_em.dds b/GameData/BetterSRBs/Parts/Assets/MassiveSRB/solid_booster_em.dds
new file mode 100644
index 0000000..d8756a6
Binary files /dev/null and b/GameData/BetterSRBs/Parts/Assets/MassiveSRB/solid_booster_em.dds differ
diff --git a/GameData/BetterSRBs/Parts/Assets/MassiveSRB/solid_booster_nm.dds b/GameData/BetterSRBs/Parts/Assets/MassiveSRB/solid_booster_nm.dds
new file mode 100644
index 0000000..f9f070a
Binary files /dev/null and b/GameData/BetterSRBs/Parts/Assets/MassiveSRB/solid_booster_nm.dds differ
diff --git a/GameData/BetterSRBs/Parts/SRB_1p875x22.cfg b/GameData/BetterSRBs/Parts/SRB_1p875x22.cfg
index cfb3d0a..8ee8883 100644
--- a/GameData/BetterSRBs/Parts/SRB_1p875x22.cfg
+++ b/GameData/BetterSRBs/Parts/SRB_1p875x22.cfg
@@ -4,7 +4,7 @@
 	!mesh = none
 	MODEL
 	{
-		model = Squad/Parts/Engine/MassiveSRB/MassiveSRB
+		model = BetterSRBs/Parts/Assets/MassiveSRB/MassiveSRB
 		texture = solid_booster_cm, BetterSRBs/Parts/SRB_1p875x22_tex
 	}
 	@rescaleFactor = 1.5
diff --git a/README.md b/README.md
index f10fa06..7b6393b 100644
--- a/README.md
+++ b/README.md
@@ -4,9 +4,9 @@ This mod is licensed by Creative Commons Attribution-NonCommercial-NoDerivs
 CC BY-NC-ND
 
 ## Changelog
-## v1.2.2
+## v1.2.3
 
-* Deleted SRB upgrades.
+* Updated for KSP 1.10.1.
 
 ## Description
 
@@ -46,6 +46,6 @@ Also included is RealPlume support for the added SRBs.
 
 ## Installation Instructions
 
-1. Download BetterSRBs v1.2.2.
+1. Download BetterSRBs v1.2.3.
 
 2. Copy from [Download]\GameData\ to [KSP]\GameData\ the folder BetterSRBs and all its contents.
\ No newline at end of file