| 1 |
On Thursday 18 February 2016 18:21:04 Mick wrote: |
| 2 |
> On Thursday 18 Feb 2016 15:24:10 Peter Humphrey wrote: |
| 3 |
> > In which case I'm stuck, because the BIOS's ez-flash utility won't let |
| 4 |
> > me |
| 5 |
> > go backwards in versions. Meanwhile I've flashed the latest one again |
| 6 |
> > just to see if it would make any difference (it hasn't), this time |
| 7 |
> > remembering to reset to defaults first. |
| 8 |
> |
| 9 |
> Downgrading the BIOS firmware can be a risky business, but if you use the |
| 10 |
> appropriate process and tools it should be achievable. Get the firmware |
| 11 |
> of one version *prior* to the version you want to end up with; i.e. go |
| 12 |
> back two steps in version terms not just one. If the downgrade is |
| 13 |
> successful, then you will need to re-flash it with the version you intend |
| 14 |
> to end up with. |
| 15 |
|
| 16 |
Ooh, sneaky! |
| 17 |
|
| 18 |
> On ASUS boards EZ-Flash will read the version in the file name of the ROM |
| 19 |
> image file and refuse to upload it. If you rename the file so as to |
| 20 |
> remove the version from the file name, EZ-Flash should accept it. |
| 21 |
|
| 22 |
It didn't occur to me that it might be so simple as the file name; I supposed |
| 23 |
EZ-Flash must read the content of the file. I'll give it a try anyway. |
| 24 |
|
| 25 |
> For example, on an ASUS PC of mine let's say I currently run: |
| 26 |
> |
| 27 |
> A88XM-PLUS-ASUS-2401.CAP |
| 28 |
> |
| 29 |
> To downgrade to A88XM-PLUS-ASUS-2400.CAP I will need to obtain a version |
| 30 |
> earlier that that, i.e. A88XM-PLUS-ASUS-2399.CAP, to remove "-2399" from |
| 31 |
> the name and try to flash the BIOS with the renamed file. Then upgrade |
| 32 |
> to next version -2400 which I want to run the MoBo with. The naming |
| 33 |
> convention is particular to the BIOS make and model, so search your |
| 34 |
> MoBo/BIOS manufacturer's website for detailed instructions and tools. |
| 35 |
|
| 36 |
The process seems straightforward; I'm not so sure about the risk. |
| 37 |
|
| 38 |
> Whatever you do, once you start flashing the ROM do not interrupt the |
| 39 |
> process, or you will most likely brick it. |
| 40 |
|
| 41 |
Yes, of course. |
| 42 |
|
| 43 |
> Alternatively, it may be easier to wait for a while until a later firmware |
| 44 |
> version is released and try that to see if it fixes any regression bugs of |
| 45 |
> the current version. |
| 46 |
|
| 47 |
Could be, yes. Meanwhile I'll see if the system builder, Armari, can offer |
| 48 |
any suggestions. |
| 49 |
|
| 50 |
Thanks for the tip! |
| 51 |
|
| 52 |
-- |
| 53 |
Rgds |
| 54 |
Peter |
Archives