To enable this patch, you will need to edit the PATCHES-* variable inside
the Makefile

--- x230t.GCHT25WW.img.prepatched.hex	2017-08-27 19:56:22.362861225 +0300
+++ x230t.GCHT25WW.img.dvorak.hex	2017-08-27 21:00:04.865220520 +0300
@@ -8657,14 +8657,14 @@
 00022180  58 00 59 6f 00 00 00 00  9e 9e 00 9f 9f 00 4a 4a  |X.Yo..........JJ|
 00022190  00 00 00 00 b2 00 00 00  8c 1f 02 00 40 00 00 00  |............@...|
 000221a0  30 21 02 00 f0 20 02 00  0b 00 00 00 70 21 02 00  |0!... ......p!..|
-000221b0  01 02 11 10 1f 6e 2e 83  00 00 00 00 00 00 00 00  |.....n..........|
-000221c0  70 03 12 1e 20 2d 2f 00  00 00 00 00 00 00 00 00  |p... -/.........|
-000221d0  71 04 13 72 21 73 30 00  00 00 00 00 00 00 00 00  |q..r!s0.........|
-000221e0  06 05 14 15 22 23 31 32  00 00 00 00 00 00 00 00  |...."#12........|
-000221f0  07 08 17 16 25 24 34 33  00 00 00 00 00 00 00 00  |....%$43........|
-00022200  0d 09 18 1c 26 75 35 38  00 00 00 00 00 00 00 00  |....&u58........|
-00022210  77 0a 19 76 27 84 36 85  00 00 00 00 00 00 00 00  |w..v'.6.........|
-00022220  0c 0b 1a 1b 28 29 2a 37  00 00 00 00 00 00 00 00  |....()*7........|
+000221b0  01 02 29 10 1f 6e 28 83  00 00 00 00 00 00 00 00  |..)..n(.........|
+000221c0  70 03 35 3a 19 2d 11 00  00 00 00 00 00 00 00 00  |p.5:.-..........|
+000221d0  71 04 36 72 13 73 25 00  00 00 00 00 00 00 00 00  |q.6r.s%.........|
+000221e0  06 05 1a 16 17 18 26 2f  00 00 00 00 00 00 00 00  |......&/........|
+000221f0  07 08 23 22 24 21 34 32  00 00 00 00 00 00 00 00  |..#"$!42........|
+00022200  1c 09 30 0d 15 75 12 38  00 00 00 00 00 00 00 00  |..0..u.8........|
+00022210  77 0a 14 76 33 84 31 85  00 00 00 00 00 00 00 00  |w..v3.1.........|
+00022220  1b 0b 27 37 20 0c 2a 2e  00 00 00 00 00 00 00 00  |..'7 .*.........|
 00022230  78 79 0e 0f 1d 74 2b 3d  00 00 00 00 00 00 00 00  |xy...t+=........|
 00022240  4b 7b 00 9b 00 00 00 59  00 00 00 00 00 00 00 00  |K{.....Y........|
 00022250  4c 7a 9a 99 98 97 a0 54  00 00 00 00 00 00 00 00  |Lz.....T........|
@@ -8672,8 +8672,8 @@
 00022270  50 51 00 00 00 53 7e 4f  00 00 00 00 00 00 00 00  |PQ...S~O........|
 00022280  00 7c 7d 00 00 3c 00 3e  00 00 00 00 00 00 00 00  |.|}..<.>........|
 00022290  00 00 00 2c 00 00 39 00  00 00 00 00 00 00 00 00  |...,..9.........|
-000222a0  3a 00 00 00 00 00 40 00  00 00 00 00 00 00 00 96  |:.....@.........|
-000222b0  00 9d 00 9e 9f 4a 3a 9c  7d 7e 00 00 00 00 00 00  |.....J:.}~......|
+000222a0  1e 00 00 00 00 00 40 00  00 00 00 00 00 00 00 96  |......@.........|
+000222b0  00 9d 00 9e 9f 4a 1e 9c  7d 7e 00 00 00 00 00 00  |.....J..}~......|
 000222c0  ff 00 7f 00 7f 00 ff 00  ff 00 ff 00 ff 00 ff 00  |................|
 000222d0  ff 00 8b 00 ff 00 d3 00  e3 00 a6 00 48 00 41 80  |............H.A.|
 000222e0  fa 03 00 00 a0 97 00 00  10 01 00 00 b0 21 02 00  |.............!..|