Getting started with an Old PineTime dev kit (flash procedure?)

[Meurton]

Hello,

So i've dusted of my old pinetime dev kit. Beforte the infinitime 0.7 firmware. Just the closed source firmware.

Here is my plan. Will it work or will it brick?

-> Flash new bootloader with BLE with the DaFlasher App
Like described on the WaspOS tutorial*:
1) flash 'hacked'
2) flash 'dafit..'
3) and then?

The documantation says flash 'bootloader-daflasher.zip'. But i can't find that file anywhere.
I think that, finishing stages 1 and 2 will give me a 'unlocked' pinetime. And i can flash the waspos 4.1 firmware. 
? Is this correct?

Or can i then follow the infinitime instructions**
1) flash inifitime 1.x
2) flash bootloader
3) flash recovery

I expect that i have to flash a wasp/infinitime bootloader first. That 'bootloader-daflasher' that seems missing..

Help appreciated!

*Installation Guide — WASP-OS documentation
**InfiniTime/gettingStarted-1.0.md at 1.2.0 · JF002/InfiniTime · GitHub