When I look at the bootloader hex file, the starting address from the word type of the program is 7E00 according to intel-hex format. This is the 3F00. The interesting part starts right now. According to the Atmega328p datasheet, the BOOTS1 and BOOTS2 registers must be set for this to start from 3F00. But when I look at the Arduino Uno fuse settings,
lfuse = 0xff
hfuse = 0xde
efuse = 0x05
is defined as such. In this case . The BOOTS1 and BOOTS2 parameters in the High fuse settings parameter are set as not set.
Is there something I'm missing?
:107E0000112484B714BE81FFF0D085E080938100F7
:107E100082E08093C00088E18093C10086E0809377
:107E2000C20080E18093C4008EE0C9D0259A86E02C
:107E300020E33CEF91E0309385002093840096BBD3
:107E4000B09BFECF1D9AA8958150A9F7CC24DD24C4
:107E500088248394B5E0AB2EA1E19A2EF3E0BF2EE7
:107E6000A2D0813461F49FD0082FAFD0023811F036
:107E7000013811F484E001C083E08DD089C08234E0
:107E800011F484E103C0853419F485E0A6D080C0E4
:107E9000853579F488D0E82EFF2485D0082F10E0AE
:107EA000102F00270E291F29000F111F8ED06801E7
:107EB0006FC0863521F484E090D080E0DECF843638
:107EC00009F040C070D06FD0082F6DD080E0C81688
:107ED00080E7D80618F4F601B7BEE895C0E0D1E017
:107EE00062D089930C17E1F7F0E0CF16F0E7DF06D8
:107EF00018F0F601B7BEE89568D007B600FCFDCFD4
:107F0000A601A0E0B1E02C9130E011968C91119780
:107F100090E0982F8827822B932B1296FA010C0160
:107F200087BEE89511244E5F5F4FF1E0A038BF0790
:107F300051F7F601A7BEE89507B600FCFDCF97BE46
:107F4000E89526C08437B1F42ED02DD0F82E2BD052
:107F50003CD0F601EF2C8F010F5F1F4F84911BD097
:107F6000EA94F801C1F70894C11CD11CFA94CF0C13
:107F7000D11C0EC0853739F428D08EE10CD085E9AC
:107F80000AD08FE07ACF813511F488E018D01DD067
:107F900080E101D065CF982F8091C00085FFFCCF94
:107FA0009093C60008958091C00087FFFCCF809118
:107FB000C00084FD01C0A8958091C6000895E0E648
:107FC000F0E098E1908380830895EDDF803219F02E
:107FD00088E0F5DFFFCF84E1DECF1F93182FE3DFCA
:107FE0001150E9F7F2DF1F91089580E0E8DFEE27F6
:047FF000FF270994CA
:027FFE00040479
:0400000300007E007B
:00000001FF
Here is the optibootbootloader.hex file