title says it all pretty much
this assumes several things
1) that there is a "key" that the bootloader uses to "verify" new packages (OTA) and/or your custom rom (reject)
2) that this key is available via JTAG access
3) that knowing this key would allow a custom rom to be tweaked to have the same key (hash collision)
4) that this would essentially mean a compromised bootloader
5) to be useful to lots of people, that this key is the same on every S5 for a given carrier
this assumes several things
1) that there is a "key" that the bootloader uses to "verify" new packages (OTA) and/or your custom rom (reject)
2) that this key is available via JTAG access
3) that knowing this key would allow a custom rom to be tweaked to have the same key (hash collision)
4) that this would essentially mean a compromised bootloader
5) to be useful to lots of people, that this key is the same on every S5 for a given carrier