Used KT200 to write EDC17C50 on Bench, stop on 88%, any solution?
Look at the error image below:


Possible reason and solution:
Always just flash file, Rewrite original all, then retry with flash only, if you try to write ori the same stuck on 88%, then write EDC17C50 file on Boot mode. 
Besides, the checksum is not done.

How to use KT200 to write EDC17C50 file on Boot mode?
Wiring Diagram of BOSCH EDC17C50 / C41 Vers.2 [TC1797 INT.F.] - BMW, Mini, Peugeot, Citroen
Kit to use:
- Multifunction cable  

READ AND WRITE ECU
Connect with the multifunction cable the following pinout and the boot shown below.
Use the driver:
→ TOOLS BOOT MODE
→ INFINEON TRICORE Boot
→ SAK TC1797


ATTENTION:
If the password error message appears at the beginning of the reading, proceed as follows:

PASSWORD SEARCH
Disable the boot mode by unsoldering the gray wire. Connect the pinout below.
Use the driver:
→ TOOLS BOOT MODE
→ INFINEON TRICORE Tool Password
→ OBD PASSWORD TPROTV08 BMW - MINI
→ Click on "Find Password" and follow the software messages. 


If the password was found with this system, go directly to the boot step to read and write the
control unit.
Otherwise, see next step .. 

PASSWORD SEARCH:
Connect the pinout below.
Use the driver:
→ TOOLS BOOT MODE
→ INFINEON TRICORE Tool Password
→ PASSWORD BFT
→ Click on "Find Password" and follow the software messages. 


If the password was found with this system, go directly to the boot step to read and write the control unit.
Otherwise, try again by moving the white and wire: 
 

Now that the password has been found it’s possible to read and write the control unit as described in STEP 1.