diff --git a/postcodes.csv b/postcodes.csv
index cde8299..226970c 100644
--- a/postcodes.csv
+++ b/postcodes.csv
@@ -151,6 +151,17 @@
 "XSS,XSX","OS","0xA113",,1,"ENET_INIT","Failing to initialize Ethernet ic -> replace U47"
 "XSS,XSX","OS","0x0001",,1,"OS_ERROR_E1","General SSD Partition/Layout Error, check ssd health, clone first partition to a different SSD."
 "XSS,XSX","OS","0x0002",,1,"OS_ERROR_E2","General SSD Partition/Layout/SBL File Error, check ssd health, clone first partition to a different SSD."
+"XOP,XOS,XOX,XSS,XSX","OS","0x0064",,1,"UEM_HOST_SYSTEM_UPDATE_PASS2","E100"
+"XOP,XOS,XOX,XSS,XSX","OS","0x0066",,1,"UEM_HOST_FACTORY_RESET","E102"
+"XOP,XOS,XOX,XSS,XSX","OS","0x0069",,1,"UEM_HOST_RESET_XVD_MOUNT","E105 - HDD/NVMe/Filesystem Error"
+"XOP,XOS,XOX,XSS,XSX","OS","0x006A",,1,"UEM_HOST_WELL_KNOWN_XVD_MOUNT","E106 - HDD/NVMe/Filesystem Error"
+"XOP,XOS,XOX,XSS,XSX","OS","0x006B",,1,"UEM_HOST_ENGINEERING_HARDWARE_EXPIRED","E107 - Devkit certificate issue"
+"XOP,XOS,XOX,XSS,XSX","OS","0x00C8",,1,"UEM_SYS_BUGCHECK","E200"
+"XOP,XOS,XOX,XSS,XSX","OS","0x00C9",,1,"UEM_SYS_XCI_FAILURE","E201 - Code Integrity issue - files corrupt?"
+"XOP,XOS,XOX,XSS,XSX","OS","0x00CA",,1,"UEM_SYS_XAM_FAILURE","E202"
+"XOP,XOS,XOX,XSS,XSX","OS","0x00CB",,1,"UEM_SYS_SYSTEM_UPDATE_PASS3","E203 - Pairing system update failure?"
+"XOP,XOS,XOX,XSS,XSX","OS","0x00CD",,1,"UEM_SYS_UPDMGR_CRASH","E205"
+"XOP,XOS,XOX,XSS,XSX","OS","0x00D0",,1,"UEM_SYS_XBOX_USERMODE_INIT_FAILURE","E208"
 "XSS,XSX","SP","0x0007",,1,"RAM_SHUTDOWN","Shutdown due to memory error.. last code shows which chip. rerun multiple times or ask on discord, if no Bank data is decoded."
 "XSS,XSX","SP","0x04A5",,1,"KNOWN_UNKNOWN1","04A5 Solution is unknown. Tried clone SSD, changing SB, powersupply and XBFS repair. please report if you find the solution."
 "XSS","SMC","0xE046",,1,"SMC_FATAL_GFXCPU_I2C_UNREACHABLE","GFXCORE/CPUCORE regulator did not respond through i2c -> check R231, R233, C391, R563, surrounding traces/corrosion, replace U57"