Just noticed that they updated their website https://www.europeantransmissions.com/shop/ and the various good tech info disappeared which they had on the old site for transmissions, just found it again
Transmissions ZF4HP 22/24
4 HP 22 Electronic Transmission
4 HP 24 E9 Quick Diagnostics
ZF 4 HP 22 EH Valve Information
ZF 4HP22/24 No reverse
ZF 4 HP22/24 harsh shift
E34 Transmission fault code
ZF4HP22/24 front pump leak
BMW 20 pin connector pin layout
Transmission Specifications
Early Version ZF 1986-88
Late Version ZF Pin outs 88-89

Transmissions ZF5 HP24
XK8, V8, XJR Damaged J-Gate gasket
5 HP24 E Diagnostic flow charts
XJR replacing transmission input and output seals
XK8 Replacing transmission valve body 5HP24
XK8 checking fluid level
XK8 selector level cable adjustment
5 HP24 E fluid leak at bell housing

ZF 5HP 19
BMW 5HP19 Transmission

GM 4L30E
4L30E Information
4L30 slipping 2gear
4L30 DTC code #40
BMW Transmission Electronics Bulletin

ZF 5HP30
ZF 5 HP30 NO reverse
A5 S650z Info

ZF 6HP19
6 HP19Z E90 Fundamentals
6 HP19 Diagnostic trouble Codes (DTC)
6HP19 Transmission Range sensor malfunction
6HP19 Gear4 Incorrect Ratio
ZF 6HPxx transmission replacement instructions
ZF mechatronic replacement
How to perform Adaptation

ZF 5HP18
5 HP18 NO move or delay
ZF 5 HP18 Binding up

What is CAN ?

Instrument Cluster Language
Advanced Hints and Tips
BMW programming Hints
750il Pin out Information
BMW Adaptation Information
BMW Diagnostic Trouble Codes
BMW Transmission Fluid level check
Code Description DSC
Transmission Oil Application Chard
Important Torque Converter installation tips
Basic Measuring Techniques
BMW 2004 Transmission specification
BMW Transmission EPROM update
.E38, 39, 46, 52, 53 Instrument cluster reset
Airbag failure codes
EML codes repair
EML Introduction
WML IIIs E38, E31
Understand the EWS system
BMW Drive Cycle FTP72
Instrument Cluster Language
Advanced Hints and Tips
BMW programming Hints
N62 engine update
MSV70 Engine electronics
BMW service indicator reset E46, E39, E53,
BMW service indicator reset E36, E34, E32
BMW service indicator reset E31, E30, E23, E24, E28
BMW SIA reset E46, E38, E39, E53
Introduction to Coding & Programming

CVT-Mini Cooper
Mini cooper cvt refill procedure
Mini Cooper cvt adaptation
Mini cooper cvt-reasembling

Knowledge is Power, download what you need, in case the site disappears complete, copy http://www.europeantransmission.com/...MWtechinfo.htm and use the wayback machine, I downoaded it there too