[jackie_w]

@surquizu, boriar, pickyaxe, kobayashi,
OK, you talked me into it.

Just copy/paste one of the patches below (do not enable both at once) into your existing nickel.patch file for fw 4.1.7729 and run GeoffR's Patcher program as normal.

I've written these patches in a way that should also allow them to run in future firmware versions - but only if Kobo don't change the CSS code for this particular section (so no guarantees).

See below for pictures of how they look on an AuraOne. Make your own mind up about which you prefer.

• the left-hand pair show a KA1 patched with GeoffR's Custom Footer plus my Custom Header: 50% reduction
• the middle pair show a KA1 patched with GeoffR's Custom Footer plus my Custom Header: 33% reduction
• the right-hand pair show an unpatched KA1

Note for those who already installed the 33% patch:
I've updated the `Custom Header menubar - reduce height by 33%` patch so that the Header menu icons are slightly better vertically-centred.

Patch to reduce size of Top Header menubar by 33%

Spoiler:

<Patch>
# For fw 4.01.7729 (all models) 
# N.B. It is possible this patch will also work in future firmwares, but will need testing
#
patch_name = `Custom Header menubar - reduce height by 33%`
patch_enable = `no`
find_base_address = `\x78\x9C\xA5\x95\xCB\xAE\xD3\x30\x10\x86\xF7\x7D`
replace_bytes = 0000, 78 9C A5 95 CB AE D3 30, 78 9C 95 56 4D 4F C2 40
replace_bytes = 0008, 10 86 F7 7D 8A E8 74 4B, 10 BD F3 2B 1A B9 4A 52
replace_bytes = 0010, A5 A4 4D 9A 93 20 16 5C, A0 E5 CB 78 F0 E3 A0 07
replace_bytes = 0018, 16 B0 38 02 09 04 0B 84, A2 89 46 0F C6 98 85 2E
replace_bytes = 0020, 90 DB F8 A4 16 A9 ED E3, 65 63 D9 5D B6 8B 80 C6
replace_bytes = 0028, B8 B4 05 F1 EE 34 B7 A2, FF 6E 5B 4A 4D 3B BB D3
replace_bytes = 0030, 64 C6 97 8A ED E8 CF 37, 72 9D BC 7D 6F FA 66 E6
replace_bytes = 0038, 93 7F 2E 9E 7F D4 44 1F, A5 ED 27 4D F4 26 BE 26
replace_bytes = 0040, EA 57 44 7D 66 F4 F8 F5, EA 85 D1 ED DB FA 4A CA
replace_bytes = 0048, E9 A5 94 DF 0B FA 93 6D, 8F 80 7E B1 39 BD 8F 9F
replace_bytes = 0050, E9 BB FA 93 62 95 28 CF, 15 8B 44 B8 BF 3C D3 6A
replace_bytes = 0058, 2F EE B4 3A D0 BB 6F C1, 43 CF DE 9D 9F 96 E3 AC
replace_bytes = 0060, EF 59 10 EC 19 5F EC 28, 18 EF 2C 29 0B 97 7A E2
replace_bytes = 0068, 2B 77 3A 0F D2 48 9E 9E, 78 43 B9 BB 48 6B 64 57
replace_bytes = 0070, 37 31 72 9A C4 FE CC E6, A9 FD B6 DA 08 EF E3 52
replace_bytes = 0078, 16 EE 87 9D A0 9C 9D 8C, 50 CE 76 56 DE 81 0B 79
replace_bytes = 0080, DC 0C E1 66 1E DC 37 8A, 0F 35 9C F7 56 91 50 70
replace_bytes = 0088, 94 82 1B B1 D1 12 E1 F6, 2B ED C8 40 3B 6A 42 4B
replace_bytes = 0090, 41 07 98 9C AB 46 6E 46, F6 51 8A B6 12 77 5D 1F
replace_bytes = 0098, 27 29 82 EE 82 17 B4 6A, 32 E7 C5 84 5A A5 85 57
replace_bytes = 00A0, 02 5F 58 51 52 6D 75 F8, 16 84 54 A3 FE 9E B7 DA
replace_bytes = 00A8, D9 6C 5E D1 47 1F E5 B5, 11 5D 34 41 16 1D 6C 59
replace_bytes = 00B0, 82 23 2B F4 2E 0F 96 61, A0 97 13 A7 E7 7A FF 0D
replace_bytes = 00B8, FC AF 80 71 CC 96 7F D2, 94 6B 98 7E 65 0E 88 BE
replace_bytes = 00C0, 09 4B 7E 53 CF 86 5C 49, 6D 62 47 2D DF 85 FA BE
replace_bytes = 00C8, 08 F3 77 31 5B FE 71 C7, 5B A7 5F 9E 17 22 6F 19
replace_bytes = 00D0, 2C E9 0D AD ED 33 AD A2, 6C AE D4 EF 0E 80 7A 5E
replace_bytes = 00D8, 35 C8 DE C7 AC D9 27 6D, 43 D5 2B 63 C5 F4 6D 1B
replace_bytes = 00E0, B5 E5 37 4D 40 9F 2D 0E, 90 AB 79 EE 10 74 90 D7
replace_bytes = 00E8, 53 50 41 1F 9B 54 70 F9, 2A 1D 24 8F D8 8A 44 53
replace_bytes = 00F0, 88 ED 49 F5 20 0A 3A C0, 11 D0 23 D9 09 33 39 F5
replace_bytes = 00F8, 6E E8 C9 AD 5F 4F EB 8C, 75 B5 CF EE C8 07 7D E6
replace_bytes = 0100, EE 13 50 67 1F BB D4 59, B5 A4 CF 38 3B 81 19 51
replace_bytes = 0108, B7 2B B0 21 EA B5 E0 9A, 37 82 6B C2 38 55 D9 FB
replace_bytes = 0110, 30 4E 95 7B 08 9F A4 12, B5 54 42 52 A5 F7 1D 2D
replace_bytes = 0118, 92 2A 7D 5E 68 21 1F 88, E4 94 A8 90 F1 89 E3 66
replace_bytes = 0120, 2A 19 CF 83 B5 17 0E AB, 2F 56 34 8E 49 48 33 D8
replace_bytes = 0128, 15 C5 DD 7B E1 90 19 F9, 8C CC 3F 43 25 36 3C E8
replace_bytes = 0130, 1F 1A D6 71 94 17 85 2D, CC 45 24 D4 C4 D1 8A F0
replace_bytes = 0138, 70 4F EB 9A 94 B4 D5 6D, 58 12 45 B9 4E 35 25 09
replace_bytes = 0140, C8 F6 47 A9 C4 81 17 8B, 02 C6 C3 94 25 99 CF A1
replace_bytes = 0148, AD A8 84 CA 03 AD 08 AF, 8F 63 2D FD C6 84 B4 5C
replace_bytes = 0150, 25 51 94 EB C6 7E 49 8A, 54 87 43 3A AE D1 4C F3
replace_bytes = 0158, 82 F1 B2 C1 5C 46 B5 6B, 3B B1 A2 75 27 14 4B C6
replace_bytes = 0160, C9 10 6B DA 9D 07 E1 38, 93 D6 6B 2F 2D 25 7F E0
replace_bytes = 0168, A8 BA 9B 32 6C D4 46 F3, 75 B0 2D 5B B0 43 34 D4
replace_bytes = 0170, B7 62 4F 5D D7 A4 96 8C, 21 67 44 6B AA F6 CD C0
replace_bytes = 0178, BB BA D8 0C 58 03 7F CF, D9 20 D9 37 FE 31 60 CB
replace_bytes = 0180, 5D B2 23 7B 64 DD 95 74, E0 9A 7B 03 CC 1C B8 4B
replace_bytes = 0188, 29 37 44 6B AA CE 7E E2, 46 73 0C 2B 67 32 07 C2
replace_bytes = 0190, 76 A6 D9 2F FB CF 80 85, 6C E6 40 24 62 0E 04 9B
replace_bytes = 0198, 83 1B 1F AF 6D E6 C0 B5, CD A9 59 6D 1F 9A E3 A3
replace_bytes = 01A0, 42 CD 41 B6 0F 33 07 CA, E6 80 F0 31 7A 03 23 CA
replace_bytes = 01A8, 4C E6 40 A5 C5 1C 28 C6, 64 0D 40 D9 9C 01 40 C4
replace_bytes = 01B0, CD 71 6C 79 02 CD 49 AC, 18 80 35 FB 82 67 E3 10
replace_bytes = 01B8, E6 80 3B 8C 7A 03 AF 35, 06 F3 10 3D 28 43 2A 9A
replace_bytes = 01C0, 66 0D 50 99 9C 01 42 8B, 8D 31 A4 A7 D1 1A 88 B3
replace_bytes = 01C8, 31 40 8B FB 62 7F 26 52, 9A 03 A1 98 3D 10 6D 31
replace_bytes = 01D0, F8 46 A5 D6 85 42 1E 08, A8 26 BC C7 D0 A2 F1 29
replace_bytes = 01D8, DC 18 E4 21 41 AD 81 3A, 99 93 F1 95 83 AC 3B 3E
replace_bytes = 01E0, A3 39 50 6A B3 07 AA 0D, E1 2C 0D EF 7B 7E F3 CD
replace_bytes = 01E8, 06 39 DE B1 0C 5A 94 DD, 35 3C EF E3 CF 4D 7E 94
replace_bytes = 01F0, 72 73 5A DE F8 90 45 D9, 09 8A 9F B8 E6 39 55 09
replace_bytes = 01F8, 0D 6B 89 7C BF 4C FC 27, ED C2 81 E6 C7 5C 61 28
replace_bytes = 0200, 17 F9 7C 65 FF 1C F3 63, 3C 68 BC F6 15 82 7E 0D
replace_bytes = 0208, 0C 88 87 57 DC FF 4E 4D, 01 66 43 4E E1 E5 14 7F
replace_bytes = 0210, 8E F6 D5 01 FF 65 9E 10, 27 D0 E2 20 00 00 00 00
replace_bytes = 0218, AE 1E 78 8F FD 04 B0 72, 00 00 00 00 00 00 00 00
replace_bytes = 0220, 00 6C 36 F4 88 B8 47 FC, 00 00 00 00 00 00 00 00
replace_bytes = 0228, 05 09 3D 43 96, 00 00 00 00 00
</Patch>

Patch to reduce size of Top Header menubar by 50%

Spoiler:

<Patch>
# For fw 4.01.7729 (all models) 
# N.B. It is possible this patch will also work in future firmwares, but will need testing
#
patch_name = `Custom Header menubar - reduce height by 50%`
patch_enable = `no`
find_base_address = `\x78\x9C\xA5\x95\xCB\xAE\xD3\x30\x10\x86\xF7\x7D`
replace_bytes = 0000, 78 9C A5 95 CB AE D3 30, 78 9C 95 56 CB 6E DB 30
replace_bytes = 0008, 10 86 F7 7D 8A E8 74 4B, 10 BC FB 2B 84 F8 5A 03
replace_bytes = 0010, A5 A4 4D 9A 93 20 16 5C, 72 2C F9 55 F4 D0 C7 A1
replace_bytes = 0018, 16 B0 38 02 09 04 0B 84, 3D 04 0D 90 22 39 04 41
replace_bytes = 0020, 90 DB F8 A4 16 A9 ED E3, 41 5B 8C 4C 54 26 99 15
replace_bytes = 0028, B8 B4 05 F1 EE 34 B7 A2, 5D DB 09 FA EF 91 64 C9
replace_bytes = 0030, 64 C6 97 8A ED E8 CF 37, 85 B4 E4 52 3E 7A 31 3B
replace_bytes = 0038, 93 7F 2E 9E 7F D4 44 1F, B3 9C 7D C8 C3 3B C3 CC
replace_bytes = 0040, EA 57 44 7D 66 F4 F8 F5, 2E FF C2 E0 5E F0 FD E3
replace_bytes = 0048, E9 A5 94 DF 0B FA 93 6D, CB 67 AD 7F 27 FC AF 58
replace_bytes = 0050, E9 BB FA 93 62 95 28 CF, F3 1F F9 2F 10 99 4A 8F
replace_bytes = 0058, 2F EE B4 3A D0 BB 6F C1, 9F AE 0C EC F8 D5 53 F0
replace_bytes = 0060, EF 59 10 EC 19 5F EC 28, 36 08 82 AD 90 A3 0D 17
replace_bytes = 0068, 2B 77 3A 0F D2 48 9E 9E, E9 C6 2C 83 49 AC 0F 1F
replace_bytes = 0070, 37 31 72 9A C4 FE CC E6, CB 18 3B 74 62 FF 06 43
replace_bytes = 0078, 16 EE 87 9D A0 9C 9D 8C, 82 F7 76 A3 B8 14 07 27
replace_bytes = 0080, DC 0C E1 66 1E DC 37 8A, 6F 64 E1 8D 7A F0 7E 03
replace_bytes = 0088, 94 82 1B B1 D1 12 E1 F6, 96 2A E9 A4 9D 86 98 F6
replace_bytes = 0090, 41 07 98 9C AB 46 6E 46, 14 F3 D0 B2 63 56 A2 9D
replace_bytes = 0098, 27 29 82 EE 82 17 B4 6A, C4 73 0B F1 BC 21 86 F2
replace_bytes = 00A0, 02 5F 58 51 52 6D 75 F8, F7 83 48 52 6E 48 77 3F
replace_bytes = 00A8, D9 6C 5E D1 47 1F E5 B5, 0C 86 19 7F EE 83 3C EB
replace_bytes = 00B0, 82 23 2B F4 2E 0F 96 61, EF 45 62 36 CB E0 3A 8C
replace_bytes = 00B8, FC AF 80 71 CC 96 7F D2, FE EB B7 63 94 7E A7 0B
replace_bytes = 00C0, 09 4B 7E 53 CF 86 5C 49, 84 BE AB 5F 8D 56 1C 62
replace_bytes = 00C8, 08 F3 77 31 5B FE 71 C7, FD D8 FB FE 76 B7 08 79
replace_bytes = 00D0, 2C E9 0D AD ED 33 AD A2, 47 5B 6B A5 C9 78 8A D4
replace_bytes = 00D8, 35 C8 DE C7 AC D9 27 6D, EB 18 A9 DE 69 2A A5 EF
replace_bytes = 00E0, B5 E5 37 4D 40 9F 2D 0E, EA 7F AD 16 85 33 54 41
replace_bytes = 00E8, 53 50 41 1F 9B 54 70 F9, 1D EB 54 50 24 89 2D CB
replace_bytes = 00F0, 88 ED 49 F5 20 0A 3A C0, 6E 54 C2 1B B2 0B 7A 72
replace_bytes = 00F8, 6E E8 C9 AD 5F 4F EB 8C, 69 76 B7 CE F1 3C 46 75
replace_bytes = 0100, EE 13 50 67 1F BB D4 59, D6 B1 A2 CE BC 5A 80 15
replace_bytes = 0108, B7 2B B0 21 EA B5 E0 9A, 83 AF 4A 1A 26 24 87 2A
replace_bytes = 0110, 30 4E 95 7B 08 9F A4 12, FF 45 83 D2 1C CC 71 64
replace_bytes = 0118, 92 2A 7D 5E 68 21 1F 88, 94 BE 61 90 0A B9 0C C2
replace_bytes = 0120, 2A 19 CF 83 B5 17 0E AB, 2A 63 CB F3 9C A5 BC 82
replace_bytes = 0128, 15 C5 DD 7B E1 90 19 F9, AD D8 FA 4F 0A 6A 27 93
replace_bytes = 0130, 1F 1A D6 71 94 17 85 2D, D1 5A 65 0A 96 81 01 26
replace_bytes = 0138, 70 4F EB 9A 94 B4 D5 6D, 73 CD 80 4B 53 6A 6A 96
replace_bytes = 0140, C8 F6 47 A9 C4 81 17 8B, 24 42 A6 25 4B D1 9F 53
replace_bytes = 0148, AD A8 84 CA 03 AD 08 AF, 1D 4D AC 7C 63 41 DA 0E
replace_bytes = 0150, 25 51 94 EB C6 7E 49 8A, C2 69 8F 9A 31 5A 19 F9
replace_bytes = 0158, 82 F1 B2 C1 5C 46 B5 6B, 5D 6D B9 6F 85 72 2D 64
replace_bytes = 0160, C9 10 6B DA 9D 07 E1 38, 51 BA 77 D3 4A F2 9F D2
replace_bytes = 0168, A8 BA 9B 32 6C D4 46 F3, 07 DB 8B 67 71 3A 0C 3E
replace_bytes = 0170, B7 62 4F 5D D7 A4 96 8C, E4 8A 19 C3 E1 D8 0F 5C
replace_bytes = 0178, BB BA D8 0C 58 03 7F CF, 35 52 BC D2 8F 41 53 86
replace_bytes = 0180, 5D B2 23 7B 64 DD 95 74, C7 3C 9A 52 E6 E0 59 B2
replace_bytes = 0188, 29 37 44 6B AA CE 7E E2, 9A 63 19 39 9B 39 18 E6
replace_bytes = 0190, 76 A6 D9 2F FB CF 80 85, 32 07 23 09 73 30 D8 6E
replace_bytes = 0198, 83 1B 1F AF 6D E6 C0 B5, 8E 67 B4 63 6C 4E 4C 9A
replace_bytes = 01A0, 42 CD 41 B6 0F 33 07 CA, 83 8E 8F D5 1B 7C A2 6C
replace_bytes = 01A8, 4C E6 40 A5 C5 1C 28 C6, D6 20 94 CB 19 04 24 8C
replace_bytes = 01B0, CD 71 6C 79 02 CD 49 AC, 41 58 BB 2F F4 6D 9C E1
replace_bytes = 01B8, E6 80 3B 8C 7A 03 AF 35, C3 3C 23 17 CA 72 15 ED
replace_bytes = 01C0, 66 0D 50 99 9C 01 42 8B, C6 58 AE A7 D5 1A 8C 73
replace_bytes = 01C8, 31 40 8B FB 62 7F 26 52, 9A 83 A1 94 3D 18 ED 30
replace_bytes = 01D0, F8 46 A5 D6 85 42 1E 08, C8 73 BC 17 D8 A2 C5 25
replace_bytes = 01D8, DC 18 E4 21 41 AD 81 3A, 37 A7 E2 6B 1F B2 F1 E2
replace_bytes = 01E0, A3 39 50 6A B3 07 AA 0D, 82 B5 B4 E4 5F C7 FD 27
replace_bytes = 01E8, 06 39 DE B1 0C 5A 94 DD, D7 92 3E A1 D3 6D 7E B4
replace_bytes = 01F0, 72 73 5A DE F8 90 45 D9, 09 A2 E6 D3 D5 FF 4E 75
replace_bytes = 01F8, 0D 6B 89 7C BF 4C FC 27, 8E F6 D9 81 FE CB DC 61
replace_bytes = 0200, 17 F9 7C 65 FF 1C F3 63, 38 7B D0 7B EC 3B 04 13
replace_bytes = 0208, 0C 88 87 57 DC FF 4E 4D, 0F 01 65 03 B4 FF 72 BE
replace_bytes = 0210, 8E F6 D5 01 FF 65 9E 10, 03 90 DE E1 C0 00 00 00
replace_bytes = 0218, AE 1E 78 8F FD 04 B0 72, 00 00 00 00 00 00 00 00
replace_bytes = 0220, 00 6C 36 F4 88 B8 47 FC, 00 00 00 00 00 00 00 00
replace_bytes = 0228, 05 09 3D 43 96, 00 00 00 00 00
</Patch>