[JSWolf]

Originally Posted by DNSB

The extra keyboard layout is a bit strange. The only way I've seen to modify keyboard layouts is using the KoboPatch tool. There were some patches to replace the extended Latin keyboard on a Kobo ereader with Arabic characters but I haven't seen a patch for it on current firmware. I've copied an older Arabic keyboard patch in the spoiler/code tags below:

Spoiler:

#
## Replaces keys on the Extended Latin keypad with Arabic alternatives.
## Note that after the device boots, the keypad will just show blank squares
## until the first book has been opened.
#  
# Replace layout sign
find_base_address = `ÉÀÇ`
replace_string = 0000, `ÉÀÇ`, `ع`
# Change keyboard layout
find_base_address = `æ\0\0à\0\0è\0\0ì\0\0`
# Second row, left to right:
# (for Touch/Mini/Glo/Aura the first key moves to top row, first column.)
replace_string = 0000, `æ\0`, `ذ`
replace_string = 0004, `à\0`, `ص`
replace_string = 0008, `è\0`, `ث`
replace_string = 000C, `ì\0`, `ق`
replace_string = 0010, `ò\0`, `ف`
replace_string = 0014, `ù\0`, `غ`
replace_string = 0018, `á\0`, `ع`
replace_string = 001C, `é\0`, `ه`
replace_string = 0020, `í\0`, `خ`
replace_string = 0024, `ó\0`, `ح`
replace_string = 0028, `ú\0`, `ج`
replace_string = 002C, `ý\0`, `د`
# Third row, left to right:
# (for Touch/Mini/Glo/Aura the first key moves to top row, second column.)
replace_string = 0030, `œ\0`, `ض`
replace_string = 0034, `â\0`, `ش`
replace_string = 0038, `ê\0`, `س`
replace_string = 003C, `î\0`, `ي`
replace_string = 0040, `ô\0`, `ب`
replace_string = 0044, `û\0`, `ل`
replace_string = 0048, `ä\0`, `ا`
replace_string = 004C, `ë\0`, `ت`
replace_string = 0050, `ï\0`, `ن`
replace_string = 0054, `ö\0`, `م`
replace_string = 0058, `ü\0`, `ك`
replace_string = 005C, `ÿ\0`, `ط`
# Bottom row, left to right:
replace_string = 0060, `ã\0`, `ئ`
replace_string = 0064, `ñ\0`, `ء`
replace_string = 0068, `õ\0`, `ؤ`
replace_string = 006C, `å\0`, `ر`
replace_string = 0070, `ß\0`, `ى`
replace_string = 0074, `ç\0`, `ة`
replace_string = 0078, `đ\0`, `و`
replace_string = 007C, `ø\0`, `ز`
replace_string = 0080, `ij\0`, `ظ`
replace_string = 0084, `ł\0`, `.`
#
# Top row: Extra keys for Touch/Mini/Glo/Aura only.
# (This patch cannot change the top row of the AuraHD/H2O/GloHD keypad.)
find_base_address = `ƒ\0\0þ\0\0š\0\0ž\0\0`
# Top row: columns 1-2 (see first key of second/third rows above.)
# Top row: columns 3-5
replace_string = 0004, `þ\0`, `أ`
replace_string = 0008, `š\0`, `إ`
replace_string = 000C, `ž\0`, `آ`
# Top row: column 6 is a duplicate of the last key on the bottom row.
# Top row: columns 7-10
replace_string = 0000, `ƒ\0`, `,`
replace_string = 0010, `μ\0`, `(`
replace_string = 0014, `ª\0`, `)`
replace_string = 0018, `º\0`, `-`

The thing is, we don't know the firmware the OP is running because he's listed his Kobo incorrectly. There is no Kobo Clara 2e.