On Thursday 18 February 2016 18:21:04 Mick wrote: > On Thursday 18 Feb 2016 15:24:10 Peter Humphrey wrote: > > In which case I'm stuck, because the BIOS's ez-flash utility won't let > > me > > go backwards in versions. Meanwhile I've flashed the latest one again > > just to see if it would make any difference (it hasn't), this time > > remembering to reset to defaults first. > > Downgrading the BIOS firmware can be a risky business, but if you use the > appropriate process and tools it should be achievable. Get the firmware > of one version *prior* to the version you want to end up with; i.e. go > back two steps in version terms not just one. If the downgrade is > successful, then you will need to re-flash it with the version you intend > to end up with.
Ooh, sneaky! > On ASUS boards EZ-Flash will read the version in the file name of the ROM > image file and refuse to upload it. If you rename the file so as to > remove the version from the file name, EZ-Flash should accept it. It didn't occur to me that it might be so simple as the file name; I supposed EZ-Flash must read the content of the file. I'll give it a try anyway. > For example, on an ASUS PC of mine let's say I currently run: > > A88XM-PLUS-ASUS-2401.CAP > > To downgrade to A88XM-PLUS-ASUS-2400.CAP I will need to obtain a version > earlier that that, i.e. A88XM-PLUS-ASUS-2399.CAP, to remove "-2399" from > the name and try to flash the BIOS with the renamed file. Then upgrade > to next version -2400 which I want to run the MoBo with. The naming > convention is particular to the BIOS make and model, so search your > MoBo/BIOS manufacturer's website for detailed instructions and tools. The process seems straightforward; I'm not so sure about the risk. > Whatever you do, once you start flashing the ROM do not interrupt the > process, or you will most likely brick it. Yes, of course. > Alternatively, it may be easier to wait for a while until a later firmware > version is released and try that to see if it fixes any regression bugs of > the current version. Could be, yes. Meanwhile I'll see if the system builder, Armari, can offer any suggestions. Thanks for the tip! -- Rgds Peter
