Just for keep care all who need update for this SDS2000 series oscilloscope to latest FW (after this version not anymore new versions).
Just sidenote for @gejianyong
AFAIK, in Siglent portfolio there have not been model SDS2034 (perhaps typemistake)
I think you talk about SDS2304
And for your question about options I have no answer. These old models are very different compared to more new SDS2000X ? ? models. Have you tried to talk nicely with Siglent Shenzhen office. Perhaps you can try because this is obsolete model and there is no anymore business with it... least I hope they can be some kind and think that if they help you ... you know that a good reputation for a company is more valuable than gold and good word spreads. Later you or some your contacts may purchase Siglent new instruments. Call and try...
BTW at this time when these models was in production option keys was generated ONLY in Siglent HQ and it need Serial number AND scope ID This is genuine last FW update package from Siglent. This time it was usual that Siglent share these packages in .RAR format. Today mostly .ZIP
SDS2000-FW-V-1-2-2-2.rar For these models only:
SDS2072/SDS2074 70MHz
SDS2102/SDS2104 100 MHz
SDS2202/SDS2204 200 MHz
SDS2302/SDS2304 300 MHz
This rar package include these files:
sds2k_V100R02B01D02P02_fvA1609220922M160922.ADS
SDS2000 Firmware 1.0 to 2.0 Update Instructions.pdf
SDS2000 Firmware 2.0 Revision History.pdf
SDS2000 Firmware Update Instructions.pdf
It is highly recommended to share always full package including all original files.
ETA: If someone still have V1 generation FW version in this model.
I have also this first V2 version FW package what include also .CFG file what is needed as can see in V1 to V2 update instructions)