I bought a torx T4 (<span id=”productTitle” class=”a-size-large”>Wiha – Precision Torx T4 X 40mm</span><span style=”line-height: 1.5;”>) this morning and used it to open and fix my tablet.</span>
Thanks for confirming it is T4. The T4 I got is from Kaisi 16-Piece Precision Screwdriver Set of amazon (labeled T4x40mm). It does not seem to fit at all.
Is there any trick in using it? I am afraid if I press it very hard, I may stripe the screw.