I believe there was some confusion about the radar in the F-5EM upgrade for a while, with it being widely reported as being the EL/M-2032. This was probably because Elbit was involved, & it was assumed that that implied an Israeli radar. In reality, as we now know for sure, Elbit & Embraer fitted the Grifo, as chosen by the Brazilian air force.
This previous mix-up could, perhaps, be connected to the statements that the A-4 upgrade is based on the F-5EM & uses the EL/M-2032. Stranger things have happened on the internet.
Juris praecepta sunt haec: honeste vivere, alterum non laedere, suum cuique tribuere.