[HowTo] Upgrading RAM to 128 MB (WL-500gP, WL-500W and WL-700gE)

[mitek]

Oleg,

When disabled U4, changed U3 to MICRON MT46V32M16-6T and boot I can see 64MB (so it seams one chip is working). When changed U4 and enabled both (0x0011, 0x0062, 0x0000) I still see 64MB. Do you know where could be the problem (adding capacitor does not change anything).

BTW: do you know when default settings are used (in CFE "printdefault"). There are 0x0009, 0x0062, 0x0000) (sdram_init, sdram_config, sdram_ncdl) - in rescue mode?

[Oleg]

have you used pin 9 trick at some point?

[mitek]

no, I didn't use use pin 9 trick. My router was working properly and decided to expand ram. So I followed procedure you described but at the end I see only 64MB. Do you think I need another sdram_config?

----

correction - I have used pin9 trick few months ago (before trying the ram expansion).

[Oleg]

erase /dev/mtd/3
erase /dev/mtd/4

this would wipe pin9 effect and reset to defaults.

[mitek]

Thanks a lot.
It helped and now I see whole 128MB.
I'll run memtest for a night and see if everything is working fine.

[mitek]

After all night tests I can confirm that MT46V32M16-6T memory is working fine after upgrade.
I mounted it with capacitor 2.2pF, but I think it should work also without it.
Now I have ASUS WL500gp with 128MB RAM.

Big thanks to Oleg for his help with nvram clear after pin9 trick.

BTW: At the moment only Oleg's firmware is working with 128MB. Both Kamikaze 7.09 and X-Wrt have no patch implemented yet.

[trucki]

Here you can find the 128MB patch for Openwrt / X-Wrt.
http://forum.openwrt.org/viewtopic.php?id=14560

Trucki

[mitek]

Here you can find the 128MB patch for Openwrt / X-Wrt.
http://forum.openwrt.org/viewtopic.php?id=14560

Trucki

Yes. I know about this patch and had used it in own compiled Kamikaze.
I just wanted to mention about it for people that trying to make hardware upgrade but complain about lack of 128MB support in other firmwares.

[particleman]

I have performed this upgrade twice on WL-500W routers both have worked flawlessly even without soldering a capacitor on U4. I have run memtests and have run the routers stabley for weeks. The RAM modules I used were NANYA NT5DS32M16BS-5T

Also the 128MB patch is implemented in DD-WRT v24 rc7 builds 9285 and newer. So that is now another option for 128MB upgraders, the lastest builds also have USB support.

[hggomes]

I have performed this upgrade twice on WL-500W routers both have worked flawlessly even without soldering a capacitor on U4. I have run memtests and have run the routers stabley for weeks. The RAM modules I used were NANYA NT5DS32M16BS-5T

Also the 128MB patch is implemented in DD-WRT v24 rc7 builds 9285 and newer. So that is now another option for 128MB upgraders, the lastest builds also have USB support.

Hi, i can't understand how you upgraded to 128MB with 2x32MB (NANYA NT5DS32M16BS-5T), i've buy a Kingston 512MB DDR 333 notebook memory double side (4chips of each side) (64Mx8) with NANYA NT5DS64M8BS-5T chips, is that ok to upgrade to 128mb?

Oleg said: Needed: Two TSOP packaged DDR333 or DDR400 SDRAM chips organized as 32Mx16, i can't understand how you can upgrade to 128MB with 32Mx16 chips, isn´t 64Mx8?

After all night tests I can confirm that MT46V32M16-6T memory is working fine after upgrade.
I mounted it with capacitor 2.2pF, but I think it should work also without it.
Now I have ASUS WL500gp with 128MB RAM..

How with 32MBx2 chips?

[particleman]

I bought a Kingston 512MB DDR400 SO-DIMM with 4 chips on each side, so 512/8=64

I have no idea why the Nanya code reads as it does

Hi, i can't understand how you upgraded to 128MB with 2x32MB (NANYA NT5DS32M16BS-5T), i've buy a Kingston 512MB DDR 333 notebook memory double side (4chips of each side) (64Mx8) with NANYA NT5DS64M8BS-5T chips, is that ok to upgrade to 128mb?

Oleg said: Needed: Two TSOP packaged DDR333 or DDR400 SDRAM chips organized as 32Mx16, i can't understand how you can upgrade to 128MB with 32Mx16 chips, isn´t 64Mx8?



How with 32MBx2 chips?

[hggomes]

I bought a Kingston 512MB DDR400 SO-DIMM with 4 chips on each side, so 512/8=64

I have no idea why the Nanya code reads as it does

Should i upgrade with NT5DS64M8BS-5T 64Mx8? Is the same as yours right? (64Mx8)

[Oleg]

You CAN'T use 64Mx8 chips. You need 16bit wide chips.

[hggomes]

You CAN'T use 64Mx8 chips. You need 16bit wide chips.

Is there any 64MB chips with 32Mx16 organization?

[Oleg]

Have you read first post and success stories?