Naomi dimm upgrade GDs

PCB problems and fixes
p1pkin
Please Continue...
Posts: 31
Joined: August 7th, 2014, 12:35 am
Location:

Re: Naomi dimm upgrade GDs

Post by p1pkin »

nem wrote:
p1pkin wrote:you can't software update 1.02, there is only hard way -
https://forum.arcadeotaku.com/viewtopic ... 26&t=29505
Are you 100% sure? I thought it could be done with a bunch of update discs, one incremental update at a time.
I'm 200% sure. 1.x firmwares is totally different system, not VxWorks-based, so its somewhat like lets say trying "update" Linux to Windows ;)
that bunch of update disks exist for updating VxWorks (2.x and later) to some newer version. also there is no need to do it in incremental way, its enough to install latest one.
User avatar
nem
Needs a custom rank
Posts: 2768
Joined: August 17th, 2008, 6:59 pm
Location: Finland

Re: Naomi dimm upgrade GDs

Post by nem »

Consider me schooled!

Thanks for the info.
aykiri1
Please Continue...
Posts: 5
Joined: December 11th, 2018, 2:30 pm
Location: Tr
eBay: nothing

Re: Naomi dimm upgrade GDs

Post by aykiri1 »

hi

i have naomi 1 with dimm (non netdimm 4.02) .
and i have gd-rom with one GD game with original key chip. (capcom vs snk2 MF 2001)

when after upgraded to 4.02 gd-rom not working.

i made some tests

when i remove cover (error 23 its OK)
when i close cover without disk (error 24 its OK)
when i remove scsi cable (error 25 its OK)
remove key chip also error 26
so gdrom and communicate is normal but black screen
i tested same dimm board with Netdimm doughter board (success)

so i think it cannot be fixable but can be downgrade to 3.XX

my question : can be easy downgrade 3.xx anyway. i tried extract GDS-0023E.chd from mame CHD
how can i use that file for downgrade (force update gd-rom method with hold service button) ?


edit: gds-0023e.chd is corrupted headers and meta's not correct (the file converted chd4 to 5)
p1pkin
Please Continue...
Posts: 31
Joined: August 7th, 2014, 12:35 am
Location:

Re: Naomi dimm upgrade GDs

Post by p1pkin »

make sure you set DIMM board jumpers back to GD-boot positions after firmware update via netboot, if you want it to boot from GD/CF again.

if you really want to downgrade firmware: take update binary file (the ones to use via netboot), open it in Hex-editor, change byte at offset 7E0h from 0 to 1, save binary and upload it via netboot to NAOMI.

there was a rumors - if holding Service or Test switch this will enable forced downgrade, but I cant see such key press checks in 3.17 updater code, so its probably just a wrong rumors.
aykiri1
Please Continue...
Posts: 5
Joined: December 11th, 2018, 2:30 pm
Location: Tr
eBay: nothing

Re: Naomi dimm upgrade GDs

Post by aykiri1 »

thanks p1pkin for answer

i will downgrade it
aykiri1
Please Continue...
Posts: 5
Joined: December 11th, 2018, 2:30 pm
Location: Tr
eBay: nothing

Re: Naomi dimm upgrade GDs

Post by aykiri1 »

hi p1pkin

7E0h offset value is "2C"
are you sure that adress ?
aykiri1
Please Continue...
Posts: 5
Joined: December 11th, 2018, 2:30 pm
Location: Tr
eBay: nothing

Re: Naomi dimm upgrade GDs

Post by aykiri1 »

any help ?
aykiri1
Please Continue...
Posts: 5
Joined: December 11th, 2018, 2:30 pm
Location: Tr
eBay: nothing

Re: Naomi dimm upgrade GDs

Post by aykiri1 »

hi.
how to downgrade to 3.17
any way ?
User avatar
nem
Needs a custom rank
Posts: 2768
Joined: August 17th, 2008, 6:59 pm
Location: Finland

Re: Naomi dimm upgrade GDs

Post by nem »

I don't think anyone here will know except p1pkin. You can find him at https://www.arcade-projects.com/forums/ . He posts there as MetalliC.

EDIT: typo
Last edited by nem on May 10th, 2020, 10:34 am, edited 1 time in total.
ALLPRO
Please Continue...
Posts: 2
Joined: May 10th, 2020, 6:44 am
Location: italy
eBay: thrillkillteam

Re: Naomi dimm upgrade GDs

Post by ALLPRO »

Stompp wrote: June 24th, 2015, 9:08 am
zumbito wrote:What was the ¨title¨ of the GD-Rom you used? So there are dimm updates just for differents games, but they won´t enable the CF feature, for that you need the GD thats says ¨..... CF-Box¨ right?
There's two GD-ROM update discs for the Naomi that I know of: GDS-0023A and GDS-0023C. 23A uses the same chip as Virtua Fighter 4 and 23C the same Virtua Fighter 4 Evolution. Non of them will enable CF, but using at least 23C that will update your netdimm FW to version 2.17 you can then apply the 4.02 by netbooting it (works with a nullPIC).
Hello Friend,
you seem prepared,
I'm stuck with this version, arrived with GD. 2:17

i tried via netboot to get up to 3.17 4.01 or 4.02
I have tried both with transfer and with py, but I always get error 31 after the restart.

Where am I doing wrong.

or already familiar with other 2 dimm brought to 4.01 from 3.17, therefore IP network and jumper are all ok.

is it mandatory, pic zero?
using naomi_boot.py as for games, is the pic not excluded?

thank you very much for some advice
User avatar
cheeseball
Please Continue...
Posts: 6
Joined: April 9th, 2021, 12:16 pm
Location: Tokyo, Japan
eBay: 4ericpl
Initials: EPL

Re: Naomi dimm upgrade GDs

Post by cheeseball »

Naomi 2
NetDimm is v1.02
I have a GD-ROM with Virtura Fighter 4 Evolution

If I use GDS-0023C upgrade disk, can I get the netdimm FW version to 2.17?
Then use WiPi to get to 4.02 though netboot?
Do I need a nullPIC with the latest version of WiPi net booter for the update?

Or was this information incorrect or did I misunderstand?

Edit: I'm an idiot. This DIMM doesn't have a network port. :(
Post Reply