Both Xtool X100 Pro2 and Xtool X100 Pro3 are handheld scanner, they share the same OBDII scan and immobilizer key programming functions. Xtool X100 Pro3 has no odometer correction function and adds 5 special functions including Oil light reset, EPB (Electronic Parking Brake), Steering Angle Sensor (SAS) Service, TPS (Throttle Matching) and ABS Bleeding.

For language and update, there is no much difference.

	XTOOL X100 Pro2	Xtool X100 Pro3
Image
OBDII/EOBD	Reading Codes, Erasing Codes & Reset, Data Stream, I/M Readiness, Read Live Data Stream, View Freeze Frame Data, O2 Sensor Test, On-Board Monitor Test, Read Vehicle Information, Component Test
Immobilizer Key programming	Yes	Yes
EEPROM	Yes (pin code reading, EEPROM chip reading writing)	Yes
Odometer Correction	Yes	No
Oil light reset	No	Yes
EPB (Electronic Parking Brake)	No	Yes
Steering Angle Sensor (SAS) Service	No	Yes
TPS (Throttle Matching)	No	Yes
ABS Bleeding	No	Yes
Language	English, German,Spanish, Portuguese, French, Italian, Polish, Russian	French, Chinese, English, Spanish, Portuguese, German, Russian, Polish, Italian
Update	Free Update with Lifetime on XtoolOfficial Website	Online update on XtoolOfficial Website

https://xtooltools.blogspot.com/2021/08/xtool-x100-pro2-vs-xtool-x100-pro3.html