Curious how a software update can be rolled back to mitigate a "solar radiation risk" (which would typically imply a hardware radiation susceptibility issue). Perhaps the software update comes in the form of new EEPROMs, something like that?
https://ad.easa.europa.eu/blob/EASA_AD_2025_0268_E.pdf/EAD_2...
It looks like the fix it to replace the elevator aileron computer (ELAC), which sounds like a hardware fix, not a software update rollback. But that sort of detail often doesn't survive repeated rounds of journalism.
There are two of those units in each aircraft.