Search found 12 matches
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 Topic: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
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| alins75 Replies: 48 Views: 61313 |
 Forum: Broadcom SoC based Hardware Posted: Fri Apr 18, 2014 6:26 Subject: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
| Well, the serial recovery can be done using an USB adapter.
For this jTAG cable you will need a parallel port. The serial recovery is one thing that I recommend you to try first. In most cases will ... |
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| Topic: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
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| alins75 Replies: 48 Views: 61313 |
Forum: Broadcom SoC based Hardware Posted: Thu Apr 17, 2014 7:51 Subject: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
| My E4200 remains bricked after a case of flashing the wrong firmware. Can it be fixed via a serial cable or is a JTAG cable needed? Also, could you post pics of the cables/equipment you used and links ... | |
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| Topic: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
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| alins75 Replies: 48 Views: 61313 |
Forum: Broadcom SoC based Hardware Posted: Thu Apr 03, 2014 19:41 Subject: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
| First turn of the router for a few seconds.
Then immediately after turning it on type the command from step 1. Then go to step 2 to erase cfe or to step 4 to erase the nvram. Whenever it hangs, sto ... |
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| Topic: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
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| alins75 Replies: 48 Views: 61313 |
Forum: Broadcom SoC based Hardware Posted: Thu Apr 03, 2014 19:12 Subject: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
| brjtag -erase:custom /cable:dlc5 /fc:120 /noreset /nobreak /instrlen:5 /wx8 /verbose /window:1c000000 /start:1cff0000 /length:10000
This is what you need to use to erase nvram. This is what I used ... |
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| Topic: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
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| alins75 Replies: 48 Views: 61313 |
Forum: Broadcom SoC based Hardware Posted: Thu Apr 03, 2014 18:53 Subject: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
| At this point you can probably stop the brjtag and try the command in the previous post to erase the kernel.
Next try again steps 1 to 7. Shouldn't take more than 30 min. You can lose the verbose, ... |
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| Topic: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
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| alins75 Replies: 48 Views: 61313 |
Forum: Broadcom SoC based Hardware Posted: Thu Apr 03, 2014 18:38 Subject: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
| Well, I don't know what to tell you, but I think eventually will work.
Anyway performing all the steps (1to7) didn't take more than 30 min. Erasing the kernel was pretty quick too... I did not tr ... |
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| Topic: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
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| alins75 Replies: 48 Views: 61313 |
Forum: Broadcom SoC based Hardware Posted: Thu Apr 03, 2014 18:01 Subject: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
| But why do you need to erase kernel?
After erasing the nvram the serial recovery should work. Alternatively, you can try erasing the kernel using erase: custom Something like this: brjtag -erase: ... |
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| Topic: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
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| alins75 Replies: 48 Views: 61313 |
Forum: Broadcom SoC based Hardware Posted: Thu Apr 03, 2014 17:46 Subject: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
| Before trying to erase, can you try to make a backup of the NVRAM, just to make sure the brjtag works?
Try step 1, then step 7. You should get a NVRAM, corrupted probably, but looking close to wh ... |
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| Topic: Linksys E4200 Serial/JTAG Port Guide |
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| alins75 Replies: 31 Views: 77929 |
Forum: Broadcom SoC based Hardware Posted: Wed Mar 12, 2014 12:07 Subject: Linksys E4200 Serial/JTAG Port Guide |
| This router is getting dust in my office for nearly 2 years and this winter I thought I give it a try again. I bricked after playing with some VLAN settings. The error was the continous boot loop expl ... | |
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| Topic: bricked e4200 |
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| alins75 Replies: 48 Views: 39013 |
Forum: Broadcom SoC based Hardware Posted: Wed Mar 12, 2014 11:58 Subject: bricked e4200 |
| My E4200 got bricked the same way.
Unfortunately for me, the serial recovery did not work. After the serial recovery I went straight to the continuous boot loop. I had to use the JTAG to recover. ... |
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| Topic: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
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| alins75 Replies: 48 Views: 61313 |
Forum: Broadcom SoC based Hardware Posted: Mon Mar 10, 2014 13:59 Subject: Re: HOWTO - unbrick Linksys E4200 v1 with JTAG |
| As I said, serial recovery didn't work. I had to use the unbuffered JTAG cable.
Erasing the NVRAM did not help - the CFE was corrupt. The E4200 was still in the continuos CFE boot loop. Erasing th ... |
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| Topic: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
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| alins75 Replies: 48 Views: 61313 |
Forum: Broadcom SoC based Hardware Posted: Mon Mar 10, 2014 11:36 Subject: [SOLVED] HOWTO - unbrick Linksys E4200 v1 with JTAG |
| Hi everybody,
This is a small HOWTO that you can use to unbrick the E4200 using JTAG. See details below. I have managed to brick my E4200 after flashing dd-wrt.v24-23082_NEWD-2_K2.6_XXX-nv60k.bi ... |
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