Linksys E2500 v2.1 dd-wrt-mini-e2500 flashing failed

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alvearian
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Joined: 18 Sep 2014
Posts: 2

PostPosted: Thu Sep 18, 2014 23:04    Post subject: Linksys E2500 v2.1 dd-wrt-mini-e2500 flashing failed Reply with quote
FCC-ID: Q87-E2500V2

I followed this guide to flash my E2500 but only got the error "upgrade failed" after 9-15%.
So the problem is that dd-wrt build for v2 is incompatible with v2.1 hardware.
Is there any chance to get a build for 2.1?
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Sannyman
DD-WRT Novice


Joined: 22 Nov 2017
Posts: 3

PostPosted: Wed Nov 22, 2017 21:44    Post subject: Linksys E2500 v2.1 dd-wrt-mini-e2500 flashing failed Reply with quote
It is an old topic, but i found a solution.

You can use firmware from e2500 wiki page with little modification. You must change first four bytes from "E25X" to "25RU" with Hex editor.
With this modified bin file I flashed my router and now all works.
jwh7
DD-WRT Guru


Joined: 25 Oct 2013
Posts: 2155
Location: Indy

PostPosted: Wed Nov 22, 2017 23:00    Post subject: Re: Linksys E2500 v2.1 dd-wrt-mini-e2500 flashing failed Reply with quote
Sannyman wrote:
You must change first four bytes from "E25X" to "25RU" with Hex editor.
Indeed, it appears the E2500 v2.1 is called the "E2500-RU". Where/how did you acquire this device?

A couple bits of info I found:
Linksys LLC wrote:
Product: Linksys E2500-RU
Classification: Firmware Release History
Release Date: Nov 20, 2013
________________________________

Note: This firmware is only compatible with hardware version 2.1 (v2.1), but not with hardware version 1 and 2. To find out the hardware version of your router, look up the 4th and the 5th character (read from the left) of the product serial number. If they read "21" (e.g. xxx21xxxxxxxxx), the hardware version of your router is 2.1.

Firmware 2.1.00 (build 10)
- Initial release
There is actually a previous DD reference to this here. And the following makes it sound like, at least at one time or for a certain region (Russia?), it shared f/w w/ the v3 (even though the v3 has 25V3 in its f/w header):
Linksys LLC wrote:
Product: Linksys Connect Setup
Model: E2500 v3 & E2500-RU v2.1
Classification: Software Release History
Release Date: 7/7/2016
________________________________

Build 1.5.16180.0
-License Notice update
-Bug fix on Win XP and Vista

Build 1.5.15287.0
-Added Mac 10.11 and Win 10 support

Build 1.5.14350.0
-Update License Notice

Build 1.5.14274.0
-Added Support for Mac 10.9 and Mac 10.10

Build 1.5.13340.0
-Added Support for new sku-E1700
Not sure about that E1700 reference, since that's a MediaTek MT7620A device.
_________________
# NAT/SFE/CTF: limited speed w/ DD # Repeater issues # DD-WRT info: Builds, Types, Modes, Changelog, Peacock, Demo #
x64 OPNsense 19.1.6|EA6900v1.1@1GHz FT 2019.1|DD r39486M: WNDR4500v2, WNDR4000@533, E1500@353, R6300v1,
2*E2500, WRT54*@250: GLv1.1 nsg, GSv6 µ
|RT-N66U@663 Merlin 380.70|OEM: WGR614v10@400-WNR1000v3 mod
Sannyman
DD-WRT Novice


Joined: 22 Nov 2017
Posts: 3

PostPosted: Thu Nov 23, 2017 20:22    Post subject: Reply with quote
I live in Ukraine and bought this router in our online shop called Rozetka. Device page haven't any information about hardware revision (also it haven't an english version Very Happy).

I reflash it because the stock firmware started to glitch. It drops packets and after some time after reboot (around 1-2 hours) blocked all outside traffic. Ping to the router via ethernet cable was ~7-10ms.
jwh7
DD-WRT Guru


Joined: 25 Oct 2013
Posts: 2155
Location: Indy

PostPosted: Fri Nov 24, 2017 13:19    Post subject: Reply with quote
Sannyman wrote:
I live in Ukraine and bought this router in our online shop called Rozetka.
I saw mention on one of the support pages for a E2500-EN, so it would make sense the -RU is a Russia-region model. Thanks for the info; I have updated the wiki. What exact build did you flash?
_________________
# NAT/SFE/CTF: limited speed w/ DD # Repeater issues # DD-WRT info: Builds, Types, Modes, Changelog, Peacock, Demo #
x64 OPNsense 19.1.6|EA6900v1.1@1GHz FT 2019.1|DD r39486M: WNDR4500v2, WNDR4000@533, E1500@353, R6300v1,
2*E2500, WRT54*@250: GLv1.1 nsg, GSv6 µ
|RT-N66U@663 Merlin 380.70|OEM: WGR614v10@400-WNR1000v3 mod
Sannyman
DD-WRT Novice


Joined: 22 Nov 2017
Posts: 3

PostPosted: Fri Nov 24, 2017 20:55    Post subject: Reply with quote
I used "E2500 Trailed Mini Initial Flash Build" (dd-wrt.v24-21061_NEWD-2_K2.6_mini-e2500) from the wiki page.

Also, thank you for the wiki update.
alvearian
DD-WRT Novice


Joined: 18 Sep 2014
Posts: 2

PostPosted: Wed Jan 10, 2018 20:13    Post subject: Reply with quote
Sannyman wrote:
You must change first four bytes from "E25X" to "25RU" with Hex editor

Oh god, so after 4 years I was finally able to discard the stock firmware, following your advice Very Happy
Thank you very much!

jwh7 wrote:
Where/how did you acquire this device?

Bought it in Russia, which confirms the guess about a regional model.
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