nicholas0444

How did you make it? I was confused by this problem for months, looking forward your guideless. Hope it should be save and easy to be performed. Thanks. Please just PM me,I need flash from V8.01 back to V2.07 to verify something, Thanks for your help

Good news,but as you've already in the V2.07 now ,how can you help backup the V2.07 original for me ? Maybe I have to ask for assistant from someone else.

Yeah~~Found it in : https://docs.google.com/open?id=0B7D...XJDbzF2TFV2RXc You can also see the link in the page : http://forum.techinferno.com/lenovo-ibm/2260-lenovo-y580-y480-unlocked-bios-versions-15.html PS svl7 : I've flashed the bios with my V2.07 mainboard, it seems that the service tags and serial numbers won't be taken into the mainboard after the flashing. Only the Bios Version will be changed from V2.07 to V8.01 I would like to downgrade to V2.07 only to verify one thing: My battery volume changed to 62 Wh after I flashed the V8.01 and it was 72Wh while in V2.07.It is not chargeable or caused by the wear. I just doubt if the V8.01 also flashed the firmware of the battery,I don't know,so I have to go back to V2.07 to verify it. Thanks for providing me the V2.07.

For exporting the V2.07,I think you can just follow svl7's post,there is detail instructions about how to backup your bios. For the 4.5M original V8.01 bios without EC part, I found it also in slv7's topic maybe half a year ago. If you really need it I will help to dig it out from the posts

Yes, you can use the FPT.exe in Dos to flash the Bios. But I am not sure if the attachment is the one available, the comments says DOES NOT CONTAIN EC，but the size is incorrect, Full version(Bios+EC)=6MB but if I remember well,the only bios version should be 4.5MB Please be careful and make sure to valid every bios file before you take action.

Yes,the v8.01 is from the first post of this topic and the V8.01 original is from someone who uploaded to the google drive long time ago(maybe half a year? I don't remember),So you can flash the 4.5MB V8.01 original first,(Your bios version will turn into V8.01 and EC version still V2.07),then you can just follow slv7's instruction in the first post to finish the rest of the parts. BTW；All of the flashing I mention should be done in the DOS,Please be aware of that.

I've already changed my WIFI card from intel N2200 to Ultimate 6300AGN then to 7260AC and now I am using the 7260AC in my Y580. I can have the 450M bandwidth while using the 6300 AGN in the three 3x3 mode but it will be only 300M while using 7260AC because there is only the 2x2 mode for this card no matter how in 802.11A/N/AC. So my point is: It is necessary to install the 7260AC only if you have the 802.11AC router as you will have up to 876M bandwidth. But if you only have the 802.11N or A router, maybe 6300AGN is a good choice because the only advantage I see 7260AC under A/N mode is lower-power consumption and lower temperature. Thanks.

Hi, The Bios contains two parts: Origin Bios and EC Bios, Once you want to flash the bios,you have to flash both of them. But my problem is that after flashing the beta version, it turns into a locked and whitelist version, then I tried to flash back to V2.07(Mod),but the Bios version is missing after the flashing,I can only see the EC version is V.207. So I'd just flashed the orign V8.01(4.5MB) then flashed slv7's unlocked version (Also 4.5MB).

Dear Would anyone whose Y580 is running the V2.07 bios version help export the single Bios (4.5M ,not the 6M one with the EC also inside). I am now running with the EC V2.07 and Bios V8.01. I want to only downgrade the Bios part from V8.01 to V2.07. Your help will be appreciated.

Sorry for the confusion,Acctually the MC version I mentioned in my post is the Bios version.

This bios has the whitelist removed and Secureboot in Win8.1(No water mark)

My Y580 was with the factory bios version of V2.0x and I updated to Syl7's V2.07 GPU Overlocked and no whitelist at first time while it was released. Then I saw a version of 5DCN87WW on another Chinese Forum and flashed it smoothly,but this version is not a unlocked nor whitelist removed version.So I wanted to swith back to the V2.07 mod version.It went well during the downgrade to V2.07.However the MC version is missing and there is only the EC version V2.07 after the flashing. Then I just tried to only flash the MC to V8.01 using the 4.5M's file version,it works again.Now the MC is V8.01(Locked) and EC V2.07. The last step is to flash the V8.01 to unlocked version following Syl7's procedure.Succeeded again. So I just want to share with you the sequence about how I finish this unexpected job by accident. V2.07(Origin)--->V2.07(Mod)--->5DCN87WW(Beta version)--->V2.07(Mod)--->V8.01(Origin)+V2.07(Origin)--->V8.01(Mod)+V2.07(Origin)

I've already update the Bios from V2.07 to V8.01 and everything goes well since now. The EC version would remain V2.07 while the Bios version is V8.01. Also the Win8 License is Invalid as there is no license in the original V8.01

You can just find the solution in the old post of this topic. You just need modify the file platform.ini and try again.

Yes svl7 You job is great helpful for idea pad user in PRC Many people on idea pad.it168.com got the benefit for you. It is a good opportunity that if PRC can respect development result in the future. Sent from my iPad using Tapatalk HD