CH341A can read bios chip but wont erase

I am trying to program a SST 25LF040a with my CH341A programmer. I am not having any trouble reading the chip. I took several dumps and all of them are good. But for some reason the chip will not erase. The software says it erased (although seemed extremely fast) but while doing a blank check i am getting "the chips are not null" Also if i try to program with a different dump from another mobo (same model) i get "chip with the contents are in disagreement"

I am kinda stumped at this point. The only issue i can think of that may be relevant is i could not find my exact chip in the software, theres only a listing for SST 25VF040a where mine is LF. I am not sure that makes a major difference.
please help.

 

Soldered the chip back on the mobo and its fine so i know its not the chip. I am not sure why the CH341a usb programmer won't erase this chip.

 

I am using 1.17 software that came with the CH341a. I did research the chip and there doesn't seem to be a major difference between my "LF" and the "VF" model that is listed in the drop down menu in the software. The only noticiable difference comparing both datasheets is "Single 2.7v-3.6v read / write operations" (VF) and "Single 3.0v-3.6v read / write operations" (LF)

 

I found a solution thanks to the Flashrom Devs.

 

A friend of mine spoke with the Flashrom Devs about adding support for CH341a programmers and compiled a version to use with SystemRescueCd. Support is limited so write speed is slow but it works.

 

Thanks. Does it work with SST25LF040A ? Also, hows the write speed? Using flashrom it takes roughly 90 minutes.

Update: that ch341prog doesnt seem to have support for the SST25LF040A chip.

 

As i said, I already found a solution using my CH341a programmer with Flashrom.