[j-nsp] upgrading an antique 240

[Randy Bush]

given

    Item             Version  Part number  Serial number     Description
    Chassis                                JN11ADDA1AFC      MX240
    Midplane         REV 07   760-021404   ABAB0443          MX240 Backplane
    FPM Board        REV 03   760-021392   ABBD9880          Front Panel Display
    PEM 0            Rev 01   740-022697   QCS1012C070       PS 1.2-1.7kW; 100-240V AC in
    PEM 2            Rev 01   740-022697   QCS1012C03K       PS 1.2-1.7kW; 100-240V AC in
    Routing Engine 0 REV 12   740-013063   9012001212        RE-S-2000
    CB 0             REV 07   710-021523   ABBE0591          MX SCB
    FPC 2            REV 29   750-016670   ABBB5551          DPCE 40x 1GE R EQ
      CPU            REV 07   710-013713   ABBB5624          DPC PMB
      PIC 0                   BUILTIN      BUILTIN           10x 1GE(LAN) EQ
      PIC 1                   BUILTIN      BUILTIN           10x 1GE(LAN) EQ
      PIC 2                   BUILTIN      BUILTIN           10x 1GE(LAN) EQ
	Xcvr 0       REV 01   740-013111   8511738           SFP-T
	Xcvr 1       REV 01   740-013111   8511646           SFP-T
	Xcvr 2       REV 01   740-013111   9056773           SFP-T
	Xcvr 5       REV 01   740-011613   PFF2BX7           SFP-SX
	Xcvr 6       REV 01   740-011613   PFF2KB2           SFP-SX
      PIC 3                   BUILTIN      BUILTIN           10x 1GE(LAN) EQ
    Fan Tray 0       REV 01   710-030216   XV8505            Enhanced Fan Tray

running

    Model: mx240
    Junos: 14.2R7.5
    JUNOS Base OS boot [14.2R7.5]
    JUNOS Base OS Software Suite [14.2R7.5]
    JUNOS platform Software Suite [14.2R7.5]
    JUNOS Web Management [14.2R7.5]
    JUNOS Runtime Software Suite [14.2R7.5]
    JUNOS Online Documentation [14.2R7.5]
    JUNOS Services AACL Container package [14.2R7.5]
    ...

is there any sw upgrade i can usefully do?

randy