WRT54GSv1 HEX Edit CFE??

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Veritech
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Joined: 02 Jan 2007
Posts: 188
PostPosted: Thu Feb 20, 2020 2:22    Post subject: WRT54GSv1 HEX Edit CFE?? Reply with quote
I've been reading about HEX editing these older routers to aid in preventing bricking when testing new firmware builds (see here:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=143775)

I have seen topics elsewhere covering other hardware versions newer than mine (version 1.0). I dumped the CFE and was able to view the data. I compared this dump to the closest revision 1.1 and the sdram_init= data is different. Is my version 1.0 more at risk than a version 1.1 with the HEX edit or is there a value I can drop in here that is safe? I like to give this router the best recovery options I can just in case.

Thanks

.:EDIT:. make subject more clear
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redhawk0
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Joined: 04 Jan 2007
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PostPosted: Fri Feb 21, 2020 19:31    Post subject: Reply with quote
For the GSv1 unit...sdram_init should be set to 0x0008

Attached is a working CFE for the GSv1.0 unit. Feel free to change the MAC address (location 1E00H)...or use it as is (your mac will not match your sticker)

redhawk

CFE-GSv1.0-Loaded.BIN
 Description:
from a scrapped unit.

Download
 Filename:  CFE-GSv1.0-Loaded.BIN
 Filesize:  256 KB
 Downloaded:  22 Time(s)

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Veritech
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Joined: 02 Jan 2007
Posts: 188
PostPosted: Sat Feb 22, 2020 3:42    Post subject: Reply with quote
My current sdram_init is set to 0x0008 already. Should I change the boot_wait to on like the v1.1?
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redhawk0
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Location: Wherever the wind blows- North America
PostPosted: Sun Feb 23, 2020 13:17    Post subject: Reply with quote
I never did. My unit worked just fine without it set to ON.

Its been so long....I don't even remember why the unit died. I probably tried to make it into something it wasn't and the attempt broke the unit.

Sorry I can't be more help...I do remember that I didn't do anything special. BTW...that CFE I posted came from Tornado when we were doing development work.

None of the GS1.0 units that I worked with ever had the boot_wait set to on.

redhawk
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Veritech
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PostPosted: Mon Feb 24, 2020 2:55    Post subject: @redhawk0 Reply with quote
I won't change the boot wait setting since all seems well and good. Thank you for your responses redhawk0.
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