OEM SFP+ program

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iboluda
Posts: 3
Joined: Tue Oct 08, 2019 5:49 pm

OEM SFP+ program

Postby iboluda » Tue Oct 08, 2019 5:58 pm

Hi,

I'm trying to code OEM SFP+ with revelprog and revelprog sfp adapter. All the process works fine I only change the serial number from one .bin file from another. But when I unplug and plug the SFP+ it still remains the old code. It doesn´t happen with the 1G SFP codes. Do you know what I'm doing wrong?

ArT
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Re: OEM SFP+ program

Postby ArT » Wed Oct 09, 2019 8:21 am

Verification pass and after reconnect it is still old data? Are you sure that this OEM SFP+ does not require password? Are you recalculating checksums? (click chksum button after s/n change and then write buffer to memory).

iboluda
Posts: 3
Joined: Tue Oct 08, 2019 5:49 pm

Re: OEM SFP+ program

Postby iboluda » Mon Oct 14, 2019 10:27 am

Hi Art,
Here is the process with pictures attached
step 1.- Plug the optic and read the info
step 2.- Change the serial number and recalculating checksums
step 3.- Write buffer to memory
step4.- Unplug and plug the optic and read the info again

And as you can see the data is still old data. How can I know if there is a password?
Attachments
step4.png
step4.png (141.96 KiB) Viewed 1043 times
step3.png
step3.png (103.99 KiB) Viewed 1043 times
step2.png
step2.png (115.8 KiB) Viewed 1043 times
step1.png
step1.png (120.44 KiB) Viewed 1043 times

ArT
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Re: OEM SFP+ program

Postby ArT » Mon Oct 14, 2019 7:32 pm

It looks like it is some kind of protection implemented in SFP.
Do you have SFP datasheet? I guess it is write protected or it is hidden procedure for write (maybe described in datasheet).

iboluda
Posts: 3
Joined: Tue Oct 08, 2019 5:49 pm

Re: OEM SFP+ program

Postby iboluda » Wed Oct 16, 2019 4:26 pm

Hi,

Yes I have the datasheet but there is no mention of password or any hidden protection but it seems that it does. Is there any list of vendors that have unprotected coding?

Regards

ArT
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Re: OEM SFP+ program

Postby ArT » Mon Oct 21, 2019 9:50 am

Unfortunately I do not know such list :( but when you will be looking for OEM SFP (e.g. on ebay) you should find information that it is unprotected and compatible with MSA standard.


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