R4i GOLD 3DS can support the newest 3DS V4.2.0-9 system updating without any patch!
Following is R4i GOLD 3DS official site news:
3DS new firmware V4.2.0-9 update has arrived, R4i gold
3DS have been confirmed still working for the V4.2.0-9 without any
Please note:To all R4i
Gold 3DS, as long as it supports the patch V1.44(check statue from wood
menu help...), and it will support 3DS V4.2.0-9 automatically,
otherwise need to do the V1.44 patch first...
This is just official site words, just in case, best not to upgrade your 3DS system to V4.2.0-9.