Here are the SIBs involved:

SI B 23 01 06
Manual Transmission January 2006
Technical Service

This Service Information bulletin supersedes S.I. B23 01 06 dated January 2006.

(New) designates changes to this revision

SUBJECT
SMG III: Fault Code 5101 Analyze Hydraulic Sensor

MODEL
E60 M5

SITUATION
While driving, the SMG control unit may intermittently switch to the emergency program. The SMG module has Fault Code 5101 (Hex) "Analyze hydraulic sensor" and the environmental condition: "Hydraulic pressure sensor earth cable broken stored in memory.

CAUSE
SMG III module software diagnostics is too sensitive.

PROCEDURE
Perform "Short Test" and clear faults.

Do Not Replace Any Parts!

(New) Reprogram the vehicle using Progman V 20.1, or higher to Target Data status (E060-05-12-510)

WARRANTY
For the appropriate labor operations please refer to the KSD system.

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SI B 61 14 03
General Electrical Systems January 2006
Technical Service

This Service Information bulletin supersedes S.I. B61 14 03 dated December 2005.

(New) designates changes to this revision

SUBJECT

MODEL
E60, E61 (5 Series)

E63, E64 (6 Series)

SITUATION
Customer may complain of the following:

(New) The following software errors were corrected with the release of Progman 20.01.00 (Target data Status E060-05-12-510).

While driving, the SMG control module switches to emergency program. SMG Fault Code 5101 (Hex) "Analyze hydraulic sensor" is stored. (E60 M5 only) Refer to SI B23 01 06.
.
.
.
PROCEDURE
For all vehicles, on a customer complaint basis only, refer to the following procedure and warranty information.

Update the complete vehicle per SI B09 05 01 (Coding, Individualization, Programming) Procedure B, using Progman (New) 20.01.00 (Target Data Status E060-05-12-510) or higher.

WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.