I used update_PW3_5.7.4_initial.bin and had no problem JBing a PW3 with ads.
I think I used this link to the image:
http://www.mediafire.com/file/i55ir4....4_initial.bin
md5sum: 14f2267189b9ecc51d89e4e86f201e75
sha256sum: 021085d5218482392168e2940ee4fa126c4fe639bb17147253 11101e064da7e6
It would be possible to add the md5/sha256sum for each file on the wiki, so that people can verify their downloads easily.
Good luck!