E3531i-2 firmware needed (voice enabled)

[tewfik-dj]

Hi all

I need a voice enabled (non hilink ?) firmware for this modem
Got it unlocked fine a few moments ago here on this forum

The current specs are :

IMEI : 86114-------------
Serial NR. : S8S7S1--------------
Firmware : 22.521.31.00.00
Compile date / time : Mar 9 2015 11:49:06
Hardware ver. : CU1E3131IM
Dashboard version : WEBUI_17.100.10.00.216

Got confused a little bit, I ve seen some E303-ish modems with the same hw version, so their fw should work right ?

Also, if anyone can confirm that this fw is voice enabled, I'll be grateful
Huawei E3531i-2 Update 21.521.31.00.356 (Idea India)

Any info on this is more than welcome
(really anything : naming conventions, pdf specs, service manuals, bootloaders, ...)

Thanks all !

Have a nice day

[tewfik-dj]

Quick update on testing voice enabled fw's for this modem :
(I bit the bullet and updated to an uknown fw anyway)

- 2x. 318. xx .xx firmwares seem incompatible with E3531i-2
- 2x. 521 seem to be built for this kind of platform (CU1E3131IM)
- Idea India Update build : 21. 521. 31. 00. 356 is NOT voice enabled
(even though the base software replies with audio parameters) :

at^cvoice?
^CVOICE: 1, 8000, 16, 20

OK

#trying to enable voice
at^cvoice=0
ERROR