No --- you are asking the wrong question. That manuscript of Isaiah from the DSS is dated to 100 BC, in other words, it was copied by scribes circa 100 BC not originally written then.
BTW Where is the Septuagintal equivalent to this from the DSS? If the Septuagint was so magically superior and such a miraculous translation, how come this copy from 100 BC is not in the Greek language?
tired protestant canard ping
2 BC COPIES of the Septuagint found in Qumran. Not fragments COPIES.