2:/ - is only new auto navi that have RWFS for storing a some setting. It is not implement on handhelds.

In good time there was scrypt for all region:

Spoiler: All region backup
rrgn,1,1:/Garmin/reg_1.bin
rrgn,2,1:/Garmin/reg_2.bin
rrgn,3,1:/Garmin/reg_3.bin
rrgn,4,1:/Garmin/reg_4.bin
rrgn,5,1:/Garmin/reg_5.bin
rrgn,6,1:/Garmin/reg_6.bin
rrgn,7,1:/Garmin/reg_7.bin
rrgn,8,1:/Garmin/reg_8.bin
rrgn,9,1:/Garmin/reg_9.bin
rrgn,10,1:/Garmin/reg_10.bin
rrgn,11,1:/Garmin/reg_11.bin
rrgn,12,1:/Garmin/reg_12.bin
rrgn,13,1:/Garmin/reg_13.bin
rrgn,14,1:/Garmin/reg_14.bin
rrgn,15,1:/Garmin/reg_15.bin
rrgn,16,1:/Garmin/reg_16.bin
rrgn,17,1:/Garmin/reg_17.bin
rrgn,18,1:/Garmin/reg_18.bin
rrgn,19,1:/Garmin/reg_19.bin
rrgn,20,1:/Garmin/reg_20.bin
rrgn,21,1:/Garmin/reg_21.bin
rrgn,22,1:/Garmin/reg_22.bin
rrgn,23,1:/Garmin/reg_23.bin
rrgn,24,1:/Garmin/reg_24.bin
rrgn,25,1:/Garmin/reg_25.bin
rrgn,26,1:/Garmin/reg_26.bin
rrgn,27,1:/Garmin/reg_27.bin
rrgn,28,1:/Garmin/reg_28.bin
rrgn,29,1:/Garmin/reg_29.bin
rrgn,30,1:/Garmin/reg_30.bin
rrgn,31,1:/Garmin/reg_31.bin
rrgn,32,1:/Garmin/reg_32.bin
rrgn,33,1:/Garmin/reg_33.bin
rrgn,34,1:/Garmin/reg_34.bin
rrgn,35,1:/Garmin/reg_35.bin
rrgn,36,1:/Garmin/reg_36.bin
rrgn,37,1:/Garmin/reg_37.bin
rrgn,38,1:/Garmin/reg_38.bin
rrgn,39,1:/Garmin/reg_39.bin
rrgn,40,1:/Garmin/reg_40.bin
rrgn,41,1:/Garmin/reg_41.bin
rrgn,42,1:/Garmin/reg_42.bin
rrgn,43,1:/Garmin/reg_43.bin
rrgn,44,1:/Garmin/reg_44.bin
rrgn,45,1:/Garmin/reg_45.bin
rrgn,46,1:/Garmin/reg_46.bin
rrgn,47,1:/Garmin/reg_47.bin
rrgn,49,1:/Garmin/reg_49.bin
rrgn,50,1:/Garmin/reg_50.bin
rrgn,51,1:/Garmin/reg_51.bin
rrgn,52,1:/Garmin/reg_52.bin
rrgn,53,1:/Garmin/reg_53.bin
rrgn,54,1:/Garmin/reg_54.bin
rrgn,55,1:/Garmin/reg_55.bin
rrgn,56,1:/Garmin/reg_56.bin
rrgn,57,1:/Garmin/reg_57.bin
rrgn,58,1:/Garmin/reg_58.bin
rrgn,59,1:/Garmin/reg_59.bin
rrgn,60,1:/Garmin/reg_60.bin
rrgn,61,1:/Garmin/reg_61.bin
rrgn,62,1:/Garmin/reg_62.bin
rrgn,63,1:/Garmin/reg_63.bin
rrgn,64,1:/Garmin/reg_64.bin
rrgn,65,1:/Garmin/reg_65.bin
rrgn,66,1:/Garmin/reg_66.bin
rrgn,67,1:/Garmin/reg_67.bin
rrgn,68,1:/Garmin/reg_68.bin
rrgn,69,1:/Garmin/reg_69.bin
rrgn,70,1:/Garmin/reg_70.bin
rrgn,71,1:/Garmin/reg_71.bin
rrgn,72,1:/Garmin/reg_72.bin
rrgn,73,1:/Garmin/reg_73.bin
rrgn,74,1:/Garmin/reg_74.bin
rrgn,75,1:/Garmin/reg_75.bin
rrgn,76,1:/Garmin/reg_76.bin
rrgn,77,1:/Garmin/reg_77.bin
rrgn,78,1:/Garmin/reg_78.bin
rrgn,79,1:/Garmin/reg_79.bin
rrgn,80,1:/Garmin/reg_80.bin
rrgn,81,1:/Garmin/reg_81.bin
rrgn,82,1:/Garmin/reg_82.bin
rrgn,84,1:/Garmin/reg_84.bin
rrgn,85,1:/Garmin/reg_85.bin
rrgn,86,1:/Garmin/reg_86.bin
rrgn,87,1:/Garmin/reg_87.bin
rrgn,88,1:/Garmin/reg_88.bin
rrgn,89,1:/Garmin/reg_89.bin
rrgn,90,1:/Garmin/reg_90.bin
rrgn,91,1:/Garmin/reg_91.bin
rrgn,92,1:/Garmin/reg_92.bin
rrgn,93,1:/Garmin/reg_93.bin
rrgn,94,1:/Garmin/reg_94.bin
rrgn,95,1:/Garmin/reg_95.bin
rrgn,96,1:/Garmin/reg_96.bin
rrgn,97,1:/Garmin/reg_97.bin
rrgn,98,1:/Garmin/reg_98.bin
rrgn,99,1:/Garmin/reg_99.bin
rrgn,100,1:/Garmin/reg_100.bin
rrgn,101,1:/Garmin/reg_101.bin
rrgn,102,1:/Garmin/reg_102.bin
rrgn,103,1:/Garmin/reg_103.bin
rrgn,104,1:/Garmin/reg_104.bin
rrgn,105,1:/Garmin/reg_105.bin
rrgn,106,1:/Garmin/reg_106.bin
rrgn,107,1:/Garmin/reg_107.bin
rrgn,108,1:/Garmin/reg_108.bin
rrgn,109,1:/Garmin/reg_109.bin
rrgn,110,1:/Garmin/reg_110.bin
rrgn,111,1:/Garmin/reg_111.bin
rrgn,112,1:/Garmin/reg_112.bin
rrgn,113,1:/Garmin/reg_113.bin
rrgn,114,1:/Garmin/reg_114.bin
rrgn,115,1:/Garmin/reg_115.bin
rrgn,116,1:/Garmin/reg_116.bin
rrgn,117,1:/Garmin/reg_117.bin
rrgn,118,1:/Garmin/reg_118.bin
rrgn,119,1:/Garmin/reg_119.bin
rrgn,120,1:/Garmin/reg_120.bin
rrgn,121,1:/Garmin/reg_121.bin
rrgn,122,1:/Garmin/reg_122.bin
rrgn,123,1:/Garmin/reg_123.bin
rrgn,124,1:/Garmin/reg_124.bin
rrgn,125,1:/Garmin/reg_125.bin
rrgn,126,1:/Garmin/reg_126.bin
rrgn,127,1:/Garmin/reg_127.bin
rrgn,128,1:/Garmin/reg_128.bin
rrgn,129,1:/Garmin/reg_129.bin
rrgn,130,1:/Garmin/reg_130.bin
rrgn,131,1:/Garmin/reg_131.bin
rrgn,132,1:/Garmin/reg_132.bin
rrgn,133,1:/Garmin/reg_133.bin
rrgn,134,1:/Garmin/reg_134.bin
rrgn,135,1:/Garmin/reg_135.bin
rrgn,136,1:/Garmin/reg_136.bin
rrgn,137,1:/Garmin/reg_137.bin
rrgn,138,1:/Garmin/reg_138.bin
rrgn,139,1:/Garmin/reg_139.bin
rrgn,140,1:/Garmin/reg_140.bin
rrgn,141,1:/Garmin/reg_141.bin
rrgn,142,1:/Garmin/reg_142.bin
rrgn,143,1:/Garmin/reg_143.bin
rrgn,144,1:/Garmin/reg_144.bin
rrgn,145,1:/Garmin/reg_145.bin
rrgn,146,1:/Garmin/reg_146.bin
rrgn,147,1:/Garmin/reg_147.bin
rrgn,148,1:/Garmin/reg_148.bin
rrgn,149,1:/Garmin/reg_149.bin
rrgn,150,1:/Garmin/reg_150.bin
rrgn,151,1:/Garmin/reg_151.bin
rrgn,152,1:/Garmin/reg_152.bin
rrgn,153,1:/Garmin/reg_153.bin
rrgn,154,1:/Garmin/reg_154.bin
rrgn,155,1:/Garmin/reg_155.bin
rrgn,156,1:/Garmin/reg_156.bin
rrgn,157,1:/Garmin/reg_157.bin
rrgn,158,1:/Garmin/reg_158.bin
rrgn,159,1:/Garmin/reg_159.bin
rrgn,160,1:/Garmin/reg_160.bin
rrgn,161,1:/Garmin/reg_161.bin
rrgn,162,1:/Garmin/reg_162.bin
rrgn,163,1:/Garmin/reg_163.bin
rrgn,164,1:/Garmin/reg_164.bin
rrgn,165,1:/Garmin/reg_165.bin
rrgn,166,1:/Garmin/reg_166.bin
rrgn,167,1:/Garmin/reg_167.bin
rrgn,168,1:/Garmin/reg_168.bin
rrgn,169,1:/Garmin/reg_169.bin
rrgn,170,1:/Garmin/reg_170.bin
rrgn,171,1:/Garmin/reg_171.bin
rrgn,172,1:/Garmin/reg_172.bin
rrgn,173,1:/Garmin/reg_173.bin
rrgn,174,1:/Garmin/reg_174.bin
rrgn,175,1:/Garmin/reg_175.bin
rrgn,176,1:/Garmin/reg_176.bin
rrgn,177,1:/Garmin/reg_177.bin
rrgn,178,1:/Garmin/reg_178.bin
rrgn,179,1:/Garmin/reg_179.bin
rrgn,180,1:/Garmin/reg_180.bin
rrgn,181,1:/Garmin/reg_181.bin
rrgn,182,1:/Garmin/reg_182.bin
rrgn,183,1:/Garmin/reg_183.bin
rrgn,184,1:/Garmin/reg_184.bin
rrgn,185,1:/Garmin/reg_185.bin
rrgn,186,1:/Garmin/reg_186.bin
rrgn,187,1:/Garmin/reg_187.bin
rrgn,188,1:/Garmin/reg_188.bin
rrgn,189,1:/Garmin/reg_189.bin
rrgn,190,1:/Garmin/reg_190.bin
rrgn,191,1:/Garmin/reg_191.bin
rrgn,192,1:/Garmin/reg_192.bin
rrgn,193,1:/Garmin/reg_193.bin
rrgn,194,1:/Garmin/reg_194.bin
rrgn,195,1:/Garmin/reg_195.bin
rrgn,196,1:/Garmin/reg_196.bin
rrgn,197,1:/Garmin/reg_197.bin
rrgn,198,1:/Garmin/reg_198.bin
rrgn,199,1:/Garmin/reg_199.bin
rrgn,200,1:/Garmin/reg_200.bin
reboot


It is very quick because it do not include the region 48 and 83. The last regions is full file system content from device.