You can also simply inspect the ECU and post the part number here.
If it says "3P6-22" on it, it's the old one.
I'm not sure which part number the new ECU is, I have a photo of my old one before replacement but I didn't record the P/N of the new one.
See this posting for the tech bulletin which lists the affected bikes:
https://www.fjrowners.ws/phpbb2/viewtopic.p...cf8782cde06fd9e
MOTORCYCLE 10/17/07 M2007-016
2006~2007 FJR1300A/AE
Poor Engine Performance with Change in Altitude
PAGE 1 of 4
©2007 YAMAHA MOTOR CORPORATION, U.S.A.
...
Units: During Predelivery Inspection (PDI), replace the ECU with the new version per affected unit.
FJR1300AV/AW RP15E-0000003 ~ 0004056
FJR1300AVC/AWC RP15Y-0000001 ~ 0000744
FJR1300AEV/AEW RP16E-0000006 ~ 0001212
FJR1300AEVC/AEWC RP16Y-0000005 ~ 0000226
Ronayers.com says:
ENGINE CONTROL UNIT
Mfg. Part Number: 3P6-8591A-22-00
This item has been superceded to: 3P6-8591A-23-00
So I'd guess if you see "3P6-23" on the ECU, you're good.