You have to connect by wire only. Wireless connection is very dangerous for updating

Region: US
Model: TD-W8901N
Hardware Version: V.1
Framework Version: 1.0.0 Build 121121 Rel.08870
ADSL Firmware Version: FwVer:3.20.17.0_TC3087 HwVer:T14.F7_11.2

Hi Guys, i have the same problem like m.hmt .
i can't upgrade my modem because of an error exactly like that picture!!! : ERROR: FAIL TO UPDATE DUE TO....
i've downloaded the firmware from this link:
http://www.tp-link.com/la/download/TD-W8901N_V1.html
so,
1. no access to my modem to upgrade from "Firmeware tab".
2. i received a "ras" upgrade file from tp-link website, is it Romfile to upgrade the modem? and i strongly would like to save the present version but i have NO access!
please help me
Best Regards,
Farshid

anyone wanna help out me? :(

the problem is that i'm not able to access to firmware page in the modem:
http://i58.tinypic.com/208y2b5.gif

when i can't see that options like: Browse, Romfile save, upgrade Button on modem software, it means that i'm not able to upgrade it, i think it is software problem of the modem, i restarted it also rest factory settings but i see that error only. :(

[COLOR=#333333]Region: US
[COLOR=#333333]Model: [COLOR=#333333]TD-W8901N
[COLOR=#333333]Hardware Version: V.1
[COLOR=#333333]Framework Version: 1.0.0 Build 121121 Rel.08870
[COLOR=#333333]ADSL Firmware Version: FwVer:3.20.17.0_TC3087 HwVer:T14.F7_11.2

i can't see this:
http://oi63.tinypic.com/xf6epy.jpg
so, i have no aceess to upgrade it.
please help me out :(

i found the SOLUTION!!!!

The upgrade page is not accessible over wifi. You will get that error if you try accessing it.


The solution to that problem is to access the firmware upgrade page over a wired connection to the router.

it is not about version, i must connect to modem by wire cable, after is connected by wire cable to modem, i saw that everything is ok and i tried to upgrade 3 versions step by step, now my modem is fully upgraded and i am happy that it worked!