The Qur’an with vowel points has not changed until our day

Allah stated in the verses that the Qur'an is unchangeable:
...THERE IS NO CHANGINGTHE WORDS OF Allah... (Surat al-An'am, 34)
The Words of your Lord are perfect in truthfulness and justice. NO ONE
CAN CHANGE HIS WORDS. He isthe All-Hearing, the All-Knowing. (Surat
al-An'am, 115)
IT IS WE WHO HAVE SENTDOWN THE REMINDER AND WE WHO WILL PRESERVE IT.
(Surat al-Hijr,9)
It is truly a noble Qur'an in a WELL PROTECTED Book. (Surat al-Waqi'a, 77-78)
FALSEHOOD CAN NOT REACH IT FROM BEFORE ITOR BEHIND IT – it is a
revelation from One Who is All-Wise, Praiseworthy. (Surah Fussilat,
42)
As our Lord reveals in the verses above the Qur'an will remain
unchanged. The Qur'an has not survived to our day merely in written
form. Inthe time of our Prophet (saas) there were hafidhs learning the
Qur'an by heart. Consequently the Qur'an with vowel points in our day
was prepared in a way convenient to the memorization of the Hafidhs of
the time. The Qur'an memorized by the Hafidhs of the time of our our
Prophet (saas) is exactly the same as the Qur'an in our day
insha'Allah.