For the first time in history, this the author worked with two digits bordered magic squares multiples of 4. These are from orders 8 to 32. These can be accessed at the following links:
1. Two Digits Bordered Magic Squares Multiples of 4: Orders 8 to 24.
2. Two Digits Bordered Magic Squares of Orders 28 and 32.
This work is for the order of type 4k+2, where k>1. The first part for the orders 10, 14, 18 and 22 can be access at the following link:
1. Two digits Bordered Magic Squares of Orders 10, 14, 18 and 22.
In this work we shall give two digits bordered magic squares of order 26 and 30. As explained in previous works below is digit-wise classification of bordered magic squares:

Single Digit: Bordered magic squares based on single digit.
Two Digits: Bordered magic squares based on magic rectangles of order 2xk (k=4, 8, 12, …).
Three Digits: Bordered magic squares based on magic squares of order 3:
Four Digits: Bordered magic squares based on magic squares of order 4.
Five Digits: Bordered magic squares based on magic squares of order 5.
Six Digits: Bordered magic squares based on magic squares of order 6, etc.

The work can also be accessed at the following link:

Inder J. Taneja, Two digits Bordered Magic Squares of Orders 26 and 30, Zenodo, April, 30, 2023, pp. 1-44, https://doi.org/10.5281/zenodo.7880937 .
Below are few examples along with with pdf files of orders 26 and 30 for download.