ECUHELP KT200II stands out as a significant advancement over the KT200 in ECU and TCU tool technology. It retains all the capabilities of the KT200, including compatibility with existing accessories and offering the same four versions.
However, the KT200II excels with its added ECU protocols, improved automatic functions like Tricore Clone, enhanced full system drivers, and new modes for various ECUs.
Additionally, it resolves the automatic checksum issue found in KT200, offers an array of new virtual files, and enhances ECU protection and server access efficiency.
Its stable OBD reading and writing, along with the ability to handle ECUs like the DELPHI DCM7.24 which KT200 couldn't, further underscore its superior performance. 

The Same:
1. KT200II can read and write the ECUs that KT200 can.
KT200 ECU List
KT200 TCU List

2. KT200II host is compatible with the accessories of KT200.
Therefore, for those interested, ECUHELPshop.com provides options to either exchange your current KT200 or purchase the complete KT200II set. 
Please note, the opportunity to exchange the host device will expire after December 31. 

3. Both KT200II and KT200 are available in four distinct versions:
1).Auto version: Car OBD,Truck OBD, Full System, BDM/JTAG, TOOL BOOT Bench Mode, TCU Gear
2).Full Version: Car OBD, Truck OBD, Tractor OBD , Boat OBD, Motorbike OBD.Full System ,BDM/JTAG, TOOL BOOT, Bench Mode,TCU Gear
3).Full Version + one offline dongle: works offline mode.
4).Full + one offline dongle + HTprog ECU Clone Adapter.

The Different:
1.KT200II adds some more ECU protocols over KT200:
KT200II newly added ECUs (part 1).
KT200II newly added ECUs (part 2).

Generally speaking, it includes the following updates: 
NEW FULL SYSTEMS FOR DELCO OPEL / CHEVROLET / GM ECUs
NEW AUTOMATIC FUNCTION: TRICORE CLONE Added automation to clone the following control units with OTP zone adaptation and password
NEW FULL SYSTEM DRIVERS FOR BOSCH TCU ECUs
NEW FULL SYSTEM DRIVER FOR MARELLI 8GMC ECU
NEW BOOT MODE FOR SIEMENS SIM2K-305 ECUs
NEW BENCH MODE FOR MG1CA007 ECU
NEW OBD DRIVER FOR DELPHI DCM7.24 ECU
NEW OBD DRIVER FOR PHOENIX L40 ECU
NEW DRIVER BENCH MODE FOR TRW EMS2.4 ECUs
NEW OBD DRIVER FOR BOSCH EDC17 C11 NISSAN – OPEL – RENAULT
NEW OBD DRIVER + BENCH MODE FOR BOSCH MD1CS069 JOHN DEERE

2.Checksum: 
KT200 can do checksum calculation automatically, but the user is advised to do manual checksum with Winols/ Davinci/ Lsuite.
KT200II Fixed the automatic checksum problem of the first generation KT200, and the reading and writing efficiency has been greatly improved.

3.Virtual files:
ECUHELP add many new virtual files to the server for KT200II. 

4.Safety:
ECUHELP strengthened the protection of ECU, and KT200II will prompt you immediately if an operation error is made.

5.Server access efficiency:
ECUHELP optimize server access efficiency for KT200II. 

6.OBD read/write
KT200II OBD reading and writing is stable.

7.KT200II read and write DELPHI DCM7.24 ECU that KT200 can’t.

8.KT200II Upgrade New automatic function:Tricore Clone.