[Simple]

I have opened my AL4 transmission, cleaned it and changed a solenoid. During the process, my DiagBox would not recognise my Transmission ECU, while it read all errors and deleted them???

I read somewhere that someone was having a similar problem and only a very old Lexia version would recognise his ECU.. So, i set my self out for the challenge and started with Lexia 421.16... it worked (it has Firmware 4.1.6). Then I installed Lexia 345 followed by 346.22 and 347.19, they all worked, but when I upgraded to 347.99; it did NOT work, I had the same problem I am having with DiagBox (all versions no matter which Firmware is installed)....

So I went back to Lexia 347.19 and tried all updates one by one, up to 347.66, they all worked.. But Lexia 347.76, .87, .94 and .99, all did NOT work... By the way, they all have Firmware 4.2.2.

I guess reliability is more important than looks in my case!!

P.S. I also downloaded and installed DiagBox v8.20/7.84 update, not announced on PSA site yet!!.. This is the original download that is not reconfigured, it has components for "AWRoot" only.. DO NOT TRY IT if you don't know what you are doing, it will render your system NOT WORKING for sure. But if you want to have a go for fun, the link is in the attachment below..