Buffalo WZR-1750DHP Flashing

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messerchmidt
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Joined: 11 Jan 2012
Posts: 164
Location: Canada

PostPosted: Sat Dec 28, 2013 20:15    Post subject: Reply with quote
kong can you post a working file with the cpu clock fixed at 800mhz? :^)
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LOM
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Joined: 28 Dec 2008
Posts: 7614

PostPosted: Sun Dec 29, 2013 3:23    Post subject: Re: Buffalo WZR-1750DHP Flashing with cfe tftp Reply with quote
<Kong> wrote:
dusan2 wrote:

***

***
check_trx: start flash1.trx
Invalid boot block on disk
check_trx: exit flash1.trx
fw is broken
blinking led 2
***


Well if you had a look at your previous logfiles you would have noticed, that the problem is only the cpu clock, as soon as you touch the Admin page (Management.asp) your cpu clock gets set and then your problems start, it will reboot constantly modifying the cpu clock:-)

That is why I removed overclocking from my builds, because on new units overclocking works even worse than on older units, e.g. no ram clock is set. Thus my build should have worked since weeks on the 1750:-)


Have to disagree Kong, the clock error is only for the ddram clock and it will not cause a reboot loop, it will only change the routers performance.
If the clock is way too wrong then there would be a crash already in the boot loader and long before the boot attempt.

The cause for the reboot loop is given and is correct - invalid boot block.
I have a theory of what is happening..

@dusan2
Can you please do an nvram show all from within the CFE before booting ddwrt and then an nvram show after ddwrt has booted. Upload both of them here.

_________________
Kernel panic: Aiee, killing interrupt handler!
dusan2
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Joined: 20 Jun 2013
Posts: 25

PostPosted: Sun Dec 29, 2013 5:09    Post subject: Buffalo WZR-1750DHP Flashing nvram logs Reply with quote
hi
Buffalo WZR-1750DHP Flashing nvram logs
is this it ?

wzr1750dhp-nvram-boot-teraterm-dec28y13-1.txt

dusan2



wzr1750dhp-nvram-boot-teraterm-dec28y13-1.txt
 Description:
wzr1750dhp-nvram-boot-teraterm-dec28y13-1.txt

Download
 Filename:  wzr1750dhp-nvram-boot-teraterm-dec28y13-1.txt
 Filesize:  95.62 KB
 Downloaded:  309 Time(s)

LOM
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Joined: 28 Dec 2008
Posts: 7614

PostPosted: Sun Dec 29, 2013 6:25    Post subject: Re: Buffalo WZR-1750DHP Flashing nvram logs Reply with quote
dusan2 wrote:
hi
Buffalo WZR-1750DHP Flashing nvram logs
is this it ?


yes thanks and with that my theory of the cause has failed.
The 2 nvram areas are identical except for one variable which is unimportant, action_service=management

_________________
Kernel panic: Aiee, killing interrupt handler!
<Kong>
DD-WRT Guru


Joined: 15 Dec 2010
Posts: 3764
Location: Germany

PostPosted: Sun Dec 29, 2013 8:41    Post subject: Re: Buffalo WZR-1750DHP Flashing with cfe tftp Reply with quote
LOM wrote:
<Kong> wrote:
dusan2 wrote:

***

***
check_trx: start flash1.trx
Invalid boot block on disk
check_trx: exit flash1.trx
fw is broken
blinking led 2
***


Well if you had a look at your previous logfiles you would have noticed, that the problem is only the cpu clock, as soon as you touch the Admin page (Management.asp) your cpu clock gets set and then your problems start, it will reboot constantly modifying the cpu clock:-)

That is why I removed overclocking from my builds, because on new units overclocking works even worse than on older units, e.g. no ram clock is set. Thus my build should have worked since weeks on the 1750:-)


Have to disagree Kong, the clock error is only for the ddram clock and it will not cause a reboot loop, it will only change the routers performance.
If the clock is way too wrong then there would be a crash already in the boot loader and long before the boot attempt.

The cause for the reboot loop is given and is correct - invalid boot block.
I have a theory of what is happening..

@dusan2
Can you please do an nvram show all from within the CFE before booting ddwrt and then an nvram show after ddwrt has booted. Upload both of them here.


LOM, on this one you are right, but the output on page 4 shows a reboot loop in which clock gets changed at every boot.

And the above snipped with flash error does not help. If it is an offset problem, e.g. wrong start adress of linux partition, then it will work but may be overritten with any nvram change or another flash via webif.

Thus with this error it is neccessary to have serioul output with oem fw and then with dd-wrt after flashing via tftpd before the invalid boot block error shows.

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KONG Info: http://tips.desipro.de/
messerchmidt
DD-WRT User


Joined: 11 Jan 2012
Posts: 164
Location: Canada

PostPosted: Sun Dec 29, 2013 9:34    Post subject: Reply with quote
so this unit needs to be serial flashed or?!

how do we make it work? the stock firmware is god aweful
LOM
DD-WRT Guru


Joined: 28 Dec 2008
Posts: 7614

PostPosted: Sun Dec 29, 2013 11:27    Post subject: Reply with quote
@dusan2
Can you please try Kongs build r23200 from here:

http://www.desipro.de/ddwrt/K3-AC-Arm/

which has user clock frequency setting disabled.
I need to narrow down the possible reasons for your boot problem and want to be sure if it is related to overclocking enabled in Brainslayers build.

_________________
Kernel panic: Aiee, killing interrupt handler!
dusan2
DD-WRT Novice


Joined: 20 Jun 2013
Posts: 25

PostPosted: Sun Dec 29, 2013 17:16    Post subject: Buffalo WZR-1750DHP Flashing tftp kong 23250 Reply with quote
hi
Buffalo WZR-1750DHP Flashing with tftp kong 23250
used tftp pumpkin 2.7.3 an teraterm for serial terminal

and log of flashing , wifi test 5ghz and 2.4ghz, nvram show.

wzr1750dhp-kong-23250-tftp-teraterm-dec29y13-1.txt

dusan2



wzr1750dhp-kong-23250-tftp-teraterm-dec29y13-1.txt
 Description:
wzr1750dhp-kong-23250-tftp-teraterm-dec29y13-1.txt

Download
 Filename:  wzr1750dhp-kong-23250-tftp-teraterm-dec29y13-1.txt
 Filesize:  64.17 KB
 Downloaded:  339 Time(s)

LOM
DD-WRT Guru


Joined: 28 Dec 2008
Posts: 7614

PostPosted: Mon Dec 30, 2013 4:28    Post subject: Re: Buffalo WZR-1750DHP Flashing tftp kong 23250 Reply with quote
dusan2 wrote:
hi
Buffalo WZR-1750DHP Flashing with tftp kong 23250
used tftp pumpkin 2.7.3 an teraterm for serial terminal

and log of flashing , wifi test 5ghz and 2.4ghz, nvram show.

dusan2


Thanks, so is it stable now?
No more boot problem after saving in Administration/Management?

_________________
Kernel panic: Aiee, killing interrupt handler!
messerchmidt
DD-WRT User


Joined: 11 Jan 2012
Posts: 164
Location: Canada

PostPosted: Mon Dec 30, 2013 4:38    Post subject: Reply with quote
LOM wrote:
@dusan2
Can you please try Kongs build r23200 from here:

http://www.desipro.de/ddwrt/K3-AC-Arm/

which has user clock frequency setting disabled.
I need to narrow down the possible reasons for your boot problem and want to be sure if it is related to overclocking enabled in Brainslayers build.


Edit: latest kong wont flash via the buffalo gui
<Kong>
DD-WRT Guru


Joined: 15 Dec 2010
Posts: 3764
Location: Germany

PostPosted: Mon Dec 30, 2013 8:12    Post subject: Reply with quote
messerchmidt wrote:
LOM wrote:
@dusan2
Can you please try Kongs build r23200 from here:

http://www.desipro.de/ddwrt/K3-AC-Arm/

which has user clock frequency setting disabled.
I need to narrow down the possible reasons for your boot problem and want to be sure if it is related to overclocking enabled in Brainslayers build.


Edit: latest kong wont flash via the buffalo gui


Because I don't provide a initial build for flashing from oem, as I can't test it. I only provide initial builds for models I can test.

_________________
KONG PB's: http://www.desipro.de/ddwrt/
KONG Info: http://tips.desipro.de/
dusan2
DD-WRT Novice


Joined: 20 Jun 2013
Posts: 25

PostPosted: Mon Dec 30, 2013 9:10    Post subject: Buffalo WZR-1750DHP Flashing Reply with quote
hi
still not working

Buffalo WZR-1750DHP Flash tested kong 23250 and after
*setting ssh on* it will not reboot back up it will crash with this error

***
check_trx: start flash1.trx
Invalid boot block on disk
check_trx: exit flash1.trx
fw is broken
blinking led 2
***

dusan2
<Kong>
DD-WRT Guru


Joined: 15 Dec 2010
Posts: 3764
Location: Germany

PostPosted: Mon Dec 30, 2013 9:45    Post subject: Re: Buffalo WZR-1750DHP Flashing Reply with quote
dusan2 wrote:
hi
still not working

Buffalo WZR-1750DHP Flash tested kong 23250 and after
*setting ssh on* it will not reboot back up it will crash with this error

***
check_trx: start flash1.trx
Invalid boot block on disk
check_trx: exit flash1.trx
fw is broken
blinking led 2
***

dusan2


OK, then we need serial output with oem firmware installed so we can compare the offsets.

_________________
KONG PB's: http://www.desipro.de/ddwrt/
KONG Info: http://tips.desipro.de/
messerchmidt
DD-WRT User


Joined: 11 Jan 2012
Posts: 164
Location: Canada

PostPosted: Tue Dec 31, 2013 5:47    Post subject: Re: Buffalo WZR-1750DHP Flashing Reply with quote
<Kong> wrote:
dusan2 wrote:
hi
still not working

Buffalo WZR-1750DHP Flash tested kong 23250 and after
*setting ssh on* it will not reboot back up it will crash with this error

***
check_trx: start flash1.trx
Invalid boot block on disk
check_trx: exit flash1.trx
fw is broken
blinking led 2
***

dusan2


OK, then we need serial output with oem firmware installed so we can compare the offsets.


I am going to see if I can open this thing and provide a dump of what you need in short order.
messerchmidt
DD-WRT User


Joined: 11 Jan 2012
Posts: 164
Location: Canada

PostPosted: Wed Jan 01, 2014 0:03    Post subject: Reply with quote
how do you open the unit? sorry, but I do not want to break it.
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