Supported releases for i5/OS (OS/400) upgrades

Upgrades to current releases require that you be at a certain level of software. This information shows the supported combinations for source and current target releases.

To be able to upgrade to or replace the V5R4 i5/OS release, your current version of the operating system must be either at V5R4, V5R3, or V5R2. If your target release is V5R3 or V5R2, use the OS/400 software installation information for the version of OS/400 that is your target release.

If you plan to use logical partitions and want to understand about supported releases on logical partitions, see Software licensing and licensed programs for logical partitions for iSeries™ 8xx and earlier models. For IBM^® System i5, System p5, and IBM eServer™ i5 and p5 systems, see Considerations for i5/OS license agreements .

Table 1 shows the currently supported combinations for source and target releases. Some of the target releases shown in this table might not be available. If your currently installed release is earlier than those listed here, you must first upgrade your server to either V5R3 or V5R2 before you can upgrade to V5R4.

Table 1. Supported releases for OS/400 (i5/OS) upgrades
Currently installed (source) release	Valid target releases
V5R4	V5R4
V5R3	V5R3 or V5R4
V5R2	V5R2, V5R3, or V5R4

You will not be able to install V5R4 on the following AS/400^® or iSeries models:

Table 2. Nonsupported models for OS/400 (i5/OS) upgrades
150	170	250	400	40S
436	53S	500	510 (AS/400)	530
50S	600	620	640	650
720	730	740	S10	S20
S30	S40	SB1

For information on planning for system hardware upgrades, see iSeries Support Planning Link
outside information center .