Upgrade WL-HDD to 1.2.7.9-10 or 1.2.7.9-d/1.9.2.7-rtn

[Eawen]

Hi all,

Currently I am using "WLHDD-1.9.2.7-9-USB-1.71.trx" for my WLHDD device for a long time(2 years),
It quite good for e169U 3.5G/HSDPA usb modem to internet accessing, while I am in outdoors.
PS: http://koppel.cz/cdmawifi/download/1...9-USB-1.70.trx

For some reasons I need recompiling/custom firmware and upgrade kernel ver,
but so far the 1.9.2.7-10(kernel 2.4.20.XX) does no longer support original WL-500g/b/bv2/WL-300g/WL-HDD units(hardware vendor no longer support BCM4702 CPU).
PS: http://oleg.wl500g.info/#latest
And the new branch of 1.9.2.7-d(kernel 2.4.37) or 1.9.2.7-rtn(kernel 2.6.22) does not support WLHDD(BCM4702/BCM5325M) also.
PS: http://code.google.com/p/wl500g/wiki/Devices

I try to modify/um-remark root directory (in gateway) "Makefile" of 1.9.2.7-10 as below lines:
1)
MODEL=WLHDD
2)
images:
#make images-WLHDD
3)
fast:
#make images-WLHDD

After "make ; make install" process, it builds "WLHDD-1.9.2.7-10.trx" without problems.
unfortunately WLHDD(BCM4702/4MB flash/16MB SDR 32bit) seems doesn't work for new TRX file.
BTW, this new "WLHDD-1.9.2.7-10.trx" does work in WL-520gu(BCM5354/4MB flash/16MB SDR 16bit) very well.

Would please someone gives hints or ideals to tell me how to porting 1.2.7.9-10 or 1.2.7.9-d/1.9.2.7-rtn to WLHDD?
Should I modify "shared/boot.S" or "shared/sbsdram.S", or other SFR setting,
PS: http://code.google.com/p/wl500g/wiki/MemoryController
Or to update driver OBJ form Broadcom.???

Thanks,
Have a NICE day,
Eric Apr 27,2011