My wife, also on Giffgaff, has a Storex S'phone DC40G. A few days ago it was afflicted with malware which could not be cleared by factory reset and so I reluctantly re-flashed it with the matching ROM image from the Storex site. This appeared to work, but the phone will no longer connect to the (O2) network - response is 'unavailable, try later'. Coverage is adequate, and her SIM works fine when put into my old Nokia. The (Giffgaff) SIM from that also fails to connect when put in her phone. Everything I look at, like MMC, seems the same as on my working Giffgaff connection.
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