// UF
5546 0002 FFD8FFE000114A464946000102030405060708090AFFDB004300100C0C0E0C0A100E0E0
E1212101418281A181616183224261E283A343E3C3A34383840485C4E404458463838506E52586062686
8683 e4e727a7064785c666864ffdb004301121212161616301a1a3064423842646464646464646464646
4646464646464646464646464646464646464646464646464646464646464646464646464646464 ffc40
01 f0000010501010101010100000000000000000102030405060708090a0bffc400b5100002010303020
403050504040000017 d01020300041105122131410613516107227114328191a1082342b1c11552d1f02
433627282090 a161718191a25262728292a3435363738393a434445464748494a535455565758595a636
465666768696 a737475767778797a838485868788898a92939495969798999aa2a3a4a5a6a7a8a9aab2
B3B4B5B6B7B8B9BAC2C3C4C5C6C7C8C9CAD2D3D4D5D6D7D8D9DAE1E2E3E4E5E6E7E8E9EAF1F2F3F4
F5F6F7F8F9FAFFC4001F0100030101010101010101010000000000000102030405060708090A0BFFC400
B51100020102040403040705040400010277000102031104052131061241510761711322328108144291
A1B1C109233352F0156272D10A162434E125F11718191A262728292A35363738393A434445464748494
A535455565758595A636465 0006 the checksum


// UF 6 package (the last pack may be less than 512 bytes, so left to send the actual image data length 1801)
5546 1801
C6A97B79FEBEE1DC7A741F9557DCCDD4D5B48ADD4648DC7D2A749E341F2C23FEFAA134B6159945209
1 feea1356134d9dfaa85ab1f6c973f290a3d00a63caf21cbb1345c761dfd98b1f32cc00f4c54a21b2
8 c6465cfd0d57cd2e695d8ec59f3d02e16203f1a8ccac7bfe951668cd21d87e68cd33346ea007e693
34 c2d49ba8b8126ea6934dc93463345c2c05a93934e0b4f0940116da50952edc518a0928034a0d301a
5069 b192034a0d301a5cd202406941a8f751ba8192e6973516ea50690c97349ba9a3eb4a05016177526
49 a705a784a03423c5382d481453b02815c88253c2629f8a3140ae3714b4b8a5e2810dc518a771 0188
// the checksum
How to solve the checksum calculation (document: check and starts to U checksum byte
Before all the data accumulation and)