Linksys E4200
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Revision as of 05:24, 22 July 2011 (edit) Donny (Talk | contribs) (→Flashing Process) ← Previous diff |
Revision as of 19:09, 16 February 2015 (edit) (undo) JNavas (Talk | contribs) (→Flashing Process - add recommendation) Next diff → |
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Radio wl1 is Broadcom 4331 Intensi-fi Single-Chip 802.11n Transceiver | Radio wl1 is Broadcom 4331 Intensi-fi Single-Chip 802.11n Transceiver | ||
- | + | = Flashing = | |
=== Warnings === | === Warnings === | ||
- | * The E4200 is very sensitive to the nvram size. The only safe | + | * The E4200 is very sensitive to the nvram size. |
+ | * For the initial flash, upgrading stock firmware to DD_WRT use Flashing process procedure below!! Please follow it to to prevent a brick only use trailed builds | ||
+ | ** A trailed build has "E4200" in its name like: dd-wrt.v24-18777_NEWD-2_K2.6_mini-'''e4200'''.bin | ||
+ | * The only safe builds which can be used''' AFTER''' initial flash for this router are ''' nv60 builds''' | ||
+ | ** A NV60 build in its name like: dd-wrt.v24-18777_NEWD-2_K2.6_big-'''nv60'''.bin | ||
+ | * Recovery from a firmware with the wrong nvram size requires use of a jtag cable to erase the nvram.<sup>1</sup> | ||
* Support for the E4200 is still very much a work in progress at this time, outstanding issues reported have included WAN stability, and both 2.4GHz and 5GHz Radio stability. | * Support for the E4200 is still very much a work in progress at this time, outstanding issues reported have included WAN stability, and both 2.4GHz and 5GHz Radio stability. | ||
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=== Flashing Process === | === Flashing Process === | ||
- | * Perform these steps when flashing from the stock | + | * Perform these steps when flashing from the stock Linksys GUI: |
+ | |||
+ | # Read all required reading sections of the peacock announcement: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=51486 | ||
# Disconnect all cables and wireless clients. | # Disconnect all cables and wireless clients. | ||
- | # | + | # Do a [[Hard reset or 30/30/30]] on router. |
- | # Flash | + | # Set your computer to a static IP-address 192.168.1.8 |
- | + | # Connect 1 Lan cable to pc doing the flash. | |
- | #* <font color=red>Do NOT use a build with | + | # Flash an E4200-specific mini build; e.g., [ftp://ftp.dd-wrt.com/betas/2013/05-27-2013-r21676/broadcom_K26/dd-wrt.v24-21676_NEWD-2_K2.6_mini-e4200.bin '''21676 trailed initial flash build for E4200'''] |
- | + | #* <font color=red>'''Do NOT use a build with "nv60k" in the name for the initial flash'''</font>; use only the trialed build linked just above. | |
- | + | #* '''21676 is a stable, reliable, recommended build for the E4200''', but ''only use the mini version'', since ''larger versions have the [http://www.dd-wrt.com/site/content/heartbleed-dd-wrtdd-wrt-online-services dangerous Heartbleed vulnerability]''. If you need more functionality than mini, upgrade to '''[https://cloud.serdarevic.net/public.php?service=files&t=81ba7d7baa30824bb87a823a52ebfa10&path=%2FK26%2Fr22000%2B%2B&files=kingkong-nv60k-broadcom.bin&download KingKong 22000++]''': | |
- | + | # Wait for the flashing process to complete. | |
- | #* ''' | + | # Wait at LEAST another 5 minutes after the flashing process has completed. |
- | + | # Perform a [[Hard reset or 30/30/30]] after the device has successfully updated. | |
- | # | + | # Wait 3 minutes and log into web interface. |
+ | #* You may have to clear your browser cache before the web login will display. | ||
- | ===Reverting back to stock firmware=== | + | === Upgrading Process === |
+ | * If you need to upgrade to a build other then mini or a newer release take note of the following | ||
+ | * If a nv60 build is flashed to the router those are the only builds which can be flashed from that point on.<br><font color=red>'''WARNING AFTER installing DD_WRT, ONLY flash -nv60k builds, <br>Flashing anything else to the router will brick it as noted above'''</font> | ||
+ | |||
+ | # Select the build of your choosing (Mega, Big, std_usb_nas, OpenVPN, VoIP.) | ||
+ | # Follow the same flashing procedure as you used for the initial flash | ||
+ | |||
+ | === Reverting back to stock firmware === | ||
* You can always revert back to stock firmware. | * You can always revert back to stock firmware. | ||
* Download the latest E4200 firmware from linksys site. | * Download the latest E4200 firmware from linksys site. | ||
+ | |||
# Disconnect all cables and wireless clients. | # Disconnect all cables and wireless clients. | ||
# Perform a 30/30/30 reset on the device. | # Perform a 30/30/30 reset on the device. | ||
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# Perform a 30/30/30 after the device has successfully updated. | # Perform a 30/30/30 after the device has successfully updated. | ||
- | + | = Wireless-N Configuration = | |
* As is explained in [http://www.dd-wrt.com/wiki/index.php/Wireless-N_Configuration '''http://www.dd-wrt.com/wiki/index.php/Wireless-N_Configuration'''] make sure that you use AES security for your wireless N network. Do not use TKIP or the wireless speed will revert to the g standard and that would be a pity. AES+TKIP is also allowed. | * As is explained in [http://www.dd-wrt.com/wiki/index.php/Wireless-N_Configuration '''http://www.dd-wrt.com/wiki/index.php/Wireless-N_Configuration'''] make sure that you use AES security for your wireless N network. Do not use TKIP or the wireless speed will revert to the g standard and that would be a pity. AES+TKIP is also allowed. | ||
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* Both the 2.4 and 5GHz Radios run at a stock transmitting power of 100mW, decreasing the transmitting power to a value between 40 & 50mW has seemed to help stability. | * Both the 2.4 and 5GHz Radios run at a stock transmitting power of 100mW, decreasing the transmitting power to a value between 40 & 50mW has seemed to help stability. | ||
- | + | = References = | |
- | + | ||
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# [http://www.dd-wrt.com/phpBB2/viewtopic.php?t=86316&postdays=0&postorder=asc&start=210|Linksys e4200 build thread] at dd-wrt forum | # [http://www.dd-wrt.com/phpBB2/viewtopic.php?t=86316&postdays=0&postorder=asc&start=210|Linksys e4200 build thread] at dd-wrt forum | ||
# [https://fjallfoss.fcc.gov/oetcf/eas/reports/ViewExhibitReport.cfm?mode=Exhibits&RequestTimeout=500&calledFromFrame=N&application_id=699190&fcc_id='Q87-E4200'|<nowiki>FCC</nowiki> disclosures ] | # [https://fjallfoss.fcc.gov/oetcf/eas/reports/ViewExhibitReport.cfm?mode=Exhibits&RequestTimeout=500&calledFromFrame=N&application_id=699190&fcc_id='Q87-E4200'|<nowiki>FCC</nowiki> disclosures ] | ||
[[Category:Linksys]] | [[Category:Linksys]] |
Revision as of 19:09, 16 February 2015
Contents |
Hardware Specifications
CPU | Broadcom BCM4718 |
---|---|
CPU Speed | 480 MHz |
Flash ROM | 16 MB Macronix MX25L12845E |
RAM | 64 MB |
Radios | 2.4 GHz, 5 GHz |
WLAN Support | a/b/g/n |
WLAN Max Speed | 300mbps (2.4 GHz) & 450mbps (5 GHz) |
Antenna Location | Internal (x6) |
Bands | 3 x 3 |
Switch | 4x GigE + 1 WAN Broadcom 53115 IEEE 802.3/3u/3ab |
USB | 1x USB 2.0 |
Radio wl0 is Broadcom 4718 (SoC)
Radio wl1 is Broadcom 4331 Intensi-fi Single-Chip 802.11n Transceiver
Flashing
Warnings
- The E4200 is very sensitive to the nvram size.
- For the initial flash, upgrading stock firmware to DD_WRT use Flashing process procedure below!! Please follow it to to prevent a brick only use trailed builds
- A trailed build has "E4200" in its name like: dd-wrt.v24-18777_NEWD-2_K2.6_mini-e4200.bin
- The only safe builds which can be used AFTER initial flash for this router are nv60 builds
- A NV60 build in its name like: dd-wrt.v24-18777_NEWD-2_K2.6_big-nv60.bin
- Recovery from a firmware with the wrong nvram size requires use of a jtag cable to erase the nvram.1
- Support for the E4200 is still very much a work in progress at this time, outstanding issues reported have included WAN stability, and both 2.4GHz and 5GHz Radio stability.
Flashing Process
- Perform these steps when flashing from the stock Linksys GUI:
- Read all required reading sections of the peacock announcement: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=51486
- Disconnect all cables and wireless clients.
- Do a Hard reset or 30/30/30 on router.
- Set your computer to a static IP-address 192.168.1.8
- Connect 1 Lan cable to pc doing the flash.
- Flash an E4200-specific mini build; e.g., 21676 trailed initial flash build for E4200
- Do NOT use a build with "nv60k" in the name for the initial flash; use only the trialed build linked just above.
- 21676 is a stable, reliable, recommended build for the E4200, but only use the mini version, since larger versions have the dangerous Heartbleed vulnerability. If you need more functionality than mini, upgrade to KingKong 22000++:
- Wait for the flashing process to complete.
- Wait at LEAST another 5 minutes after the flashing process has completed.
- Perform a Hard reset or 30/30/30 after the device has successfully updated.
- Wait 3 minutes and log into web interface.
- You may have to clear your browser cache before the web login will display.
Upgrading Process
- If you need to upgrade to a build other then mini or a newer release take note of the following
- If a nv60 build is flashed to the router those are the only builds which can be flashed from that point on.
WARNING AFTER installing DD_WRT, ONLY flash -nv60k builds,
Flashing anything else to the router will brick it as noted above
- Select the build of your choosing (Mega, Big, std_usb_nas, OpenVPN, VoIP.)
- Follow the same flashing procedure as you used for the initial flash
Reverting back to stock firmware
- You can always revert back to stock firmware.
- Download the latest E4200 firmware from linksys site.
- Disconnect all cables and wireless clients.
- Perform a 30/30/30 reset on the device.
- Login and select the stock firmware file and flash, make sure to select "reset to defaults" on the drop down menu when flashing.
- Wait approximately 5 minutes for the flashing process to complete.
- Perform a 30/30/30 after the device has successfully updated.
Wireless-N Configuration
- As is explained in http://www.dd-wrt.com/wiki/index.php/Wireless-N_Configuration make sure that you use AES security for your wireless N network. Do not use TKIP or the wireless speed will revert to the g standard and that would be a pity. AES+TKIP is also allowed.
- Both the 2.4 and 5GHz Radios run at a stock transmitting power of 100mW, decreasing the transmitting power to a value between 40 & 50mW has seemed to help stability.
References
- e4200 build thread at dd-wrt forum
- FCC disclosures