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toh:netgear:dgn3500b [2014/08/17 18:00]
m3m3nt0 added debricking guide by chainofflowers
toh:netgear:dgn3500b [2014/08/17 18:02] (current)
m3m3nt0
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-> [[doc:howto:generic.debrick]] -> [[doc:howto:generic.debrick]]
-If you were able install the OpenWRT firmware and have problems with it, but still have it working at least with its U-Boot running and accepting a firmware via TFTP, then just follow the procedure to enter [[doc:howto:generic.failsafe!failsafe]] mode and [[doc:howto:generic.flashing.tftp|upload a working firmware via tftp]].+If you were able install the OpenWRT firmware and have problems with it, but still have it working at least with its U-Boot running and accepting a firmware via TFTP, then just follow the procedure to enter [[doc:howto:generic.failsafe|failsafe]] mode and [[doc:howto:generic.flashing.tftp|upload a working firmware via tftp]].
If the OpenWRT bootloader can't help, then you have to put the router in a "safe-recovery" condition, where it gets online in your LAN with IP 192.168.1.1 and offers a http page allowing you to upload a firmware file. If you brick it badly, the "U-Boot" of the router can't get to that point and you need to put your hands on it to recover the situation. If the OpenWRT bootloader can't help, then you have to put the router in a "safe-recovery" condition, where it gets online in your LAN with IP 192.168.1.1 and offers a http page allowing you to upload a firmware file. If you brick it badly, the "U-Boot" of the router can't get to that point and you need to put your hands on it to recover the situation.
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    - if the flashing starts but fails with an error, don't worry: just power off and on the router. You'll see the power led blinking again and you can access the "safe recovery" page at http://192.168.1.1, where a minimal web form allows you to upload the firmware at point 3: do it, this time it will work!     - if the flashing starts but fails with an error, don't worry: just power off and on the router. You'll see the power led blinking again and you can access the "safe recovery" page at http://192.168.1.1, where a minimal web form allows you to upload the firmware at point 3: do it, this time it will work!
-    **NOTE**: (important!) The netgear recovery tool has a buggy GUI. The logic triggering the discovery of your router is bound to the selection of your NIC in a listbox, and won't work if you only have one NIC (because you can't "change" the selection: you just have one option, which is already selected). Therefore, install an additional FAKE NIC driver, no matter what, so that you can change the selection and trigger the logic. I have used "Microsoft Loopback Device", which didn't hurt.+ 
 +**NOTE**: (important!) The netgear recovery tool has a buggy GUI. The logic triggering the discovery of your router is bound to the selection of your NIC in a listbox, and won't work if you only have one NIC (because you can't "change" the selection: you just have one option, which is already selected). Therefore, install an additional FAKE NIC driver, no matter what, so that you can change the selection and trigger the logic. I have used "Microsoft Loopback Device", which didn't hurt.

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toh/netgear/dgn3500b.1408291256.txt.bz2 · Last modified: 2014/08/17 18:00 by m3m3nt0