TR, Resave

OS400 -> i5/OS - > IBM i
                Power 5      Power 6

1988             AS400 - Application System 400
1990s           e was added so it was AS400e
Early 2000, changed to iSeries along with zSeries/pSeries and xSeries.
2004 -          i5 and p5
2008 -          i and p removed and named as Power System.


Technology Refresh- refers to set of PTFs required to support new H/W, new functions of firmware and technology updates.
Technology Update - refers to multiple PTFs that provide additional functionality.

If you need to back out or go to modification release, it needs scratch installation. But with TR, it is possible to return to previous release level by simply installing LIC only.

TR PTF                MF99007
TR PTF Group    SF99707
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Resave - updated release of Machine Code 57xx999. When a new h/w is introduced, a Resave is needed to support it. It could be new i/o,disk or new model. Resave code is found in I_BASE_01 DVD that is shipped with new release of s/w.It would look like RS-710-J.

https://www-912.ibm.com/e_dir/eServerPrereq.nsf link to find minimum resave level needed. You have to enter feature code which you can get from system with wrkhdwrsc *prc command.
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http://www-947.ibm.com/systems/support/i/planning/techrefresh/i71.html      to find current level for TR.

Technology Refresh release date	Description	Technology Refresh PTF Group Level	Corresponding 5770-999 Resave Level and Marker PTF	5770-999 Technology Refresh PTF
11/15/2013	IBM i 7.1 Technology Refresh 7 (TR7)	SF99707 Level 7	RS-710-J RE13260	MF99007
02/13/2013	IBM i 7.1 Technology Refresh 6 (TR6)	SF99707 Level 6	RS-710-G RE13015	MF99006
10/12/2012	IBM i 7.1 Technology Refresh 5 (TR5)	SF99707 Level 5	RS-710-F RE12249	MF99005
05/18/2012	IBM i 7.1 Technology Refresh 4 (TR4)	SF99707 Level 4	RS-710-E RE12066	MF99004
10/14/2011	IBM i 7.1 Technology Refresh 3 (TR3)	SF99707 Level 3	RS-710-D RE11221	MF99003
05/13/2011	IBM i 7.1 Technology Refresh 2 (TR2)	SF99707 Level 2	RS-710-C RE11067	MF99002
09/10/2010	IBM i 7.1 Technology Refresh 1 (TR1)	SF99707 Level 1	RS 710-B RE10187	MF99001

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Marker PTF

The marker PTF is a PTF that can only appear on a system if it was installed with an IBM supplied Resave. These markers are cumulative, meaning systems may have more than one of the Marker PTFs available. The highest Marker PTF number found can be used to determine what Resave level of the product is installed. The Marker PTF refers to the Resave Level, not the Technology Refresh Level.

How to determine the Technology Refresh PTF Group level installed on a system

Work PTF Group function. Find the PTF group named SF99707.

How to determine the Resave level installed on a system

Display PTF function for product 5770-999. Marker PTFs for this product are in the format of REnnnnn.

How to determine the Technology Refresh PTF level installed on a system

Display PTF function for product 5770-999. Technology Refresh PTFs for this product are in the format of MF99nnn.