`A556EXXSGDZG2` – Galaxy A55 5G firmware

Build A556EXXSGDZG2 is a security update for the Galaxy A55 5G (SM-A556E) on Android 16 (One UI 8). It first appeared on Samsung's servers on Jul 19, 2026 (method) and has reached 82 regions so far. It raises the bootloader bit from 15 to 16: once installed, the device no longer accepts firmware with bit 15 or lower, so a downgrade to A556EXXSFDZF2 is blocked. Samsung still serves this file.

Model: SM-A556E
Android: Android 16
Type: Security
Bootloader bit: 16
First released: Jul 19, 2026
Regions: 82

Rollout timeline by region

The date each region code (CSC) first received A556EXXSGDZG2, counted from the first release.

CSC	Region	Released	Rollout	Version (PDA/CSC/MODEM)
`AFG`	Afghanistan	Jul 19, 2026	day 0	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`EGY`	Egypt	Jul 19, 2026	day 0	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`KSA`	Saudi Arabia	Jul 19, 2026	day 0	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`LYS`	Libya	Jul 19, 2026	day 0	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`MID`	Middle East	Jul 19, 2026	day 0	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`PAK`	Pakistan	Jul 19, 2026	day 0	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`TUN`	Tunisia	Jul 19, 2026	day 0	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`XSG`	United Arab Emirates	Jul 19, 2026	day 0	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`THL`	Thailand	Jul 19, 2026	day 0	`A556EXXSGDZG2/A556EOLMGDZG2/A556EXXSGDZG2`
`XXV`	Vietnam	Jul 19, 2026	day 0	`A556EXXSGDZG2/A556EOLMGDZG2/A556EXXSGDZG2`
`SKZ`	Kazakhstan	Jul 19, 2026	day 0	`A556EXXSGDZG2/A556EOXEGDZG2/A556EXXSGDZG2`
`ACR`	Ghana	Jul 20, 2026	+1 day	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`AFR`	Africa	Jul 20, 2026	+1 day	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`DKR`	Senegal	Jul 20, 2026	+1 day	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`ECT`	Nigeria	Jul 20, 2026	+1 day	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`MWD`	Morocco	Jul 20, 2026	+1 day	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`PKD`	Pakistan	Jul 20, 2026	+1 day	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`TUR`	Turkey	Jul 20, 2026	+1 day	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`XFA`	South Africa	Jul 20, 2026	+1 day	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`XFE`	South Africa	Jul 20, 2026	+1 day	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`XFV`	South Africa (Vodacom)	Jul 20, 2026	+1 day	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`XID`	Indonesia	Jul 20, 2026	+1 day	`A556EXXSGDZG2/A556EOLEGDZG2/A556EXXSGDZG2`
`GLB`	Philippines (Globe)	Jul 20, 2026	+1 day	`A556EXXSGDZG2/A556EOLMGDZG2/A556EXXSGDZG2`
`MYM`	Myanmar	Jul 20, 2026	+1 day	`A556EXXSGDZG2/A556EOLMGDZG2/A556EXXSGDZG2`
`XME`	Malaysia	Jul 20, 2026	+1 day	`A556EXXSGDZG2/A556EOLMGDZG2/A556EXXSGDZG2`
`XNZ`	New Zealand	Jul 20, 2026	+1 day	`A556EXXSGDZG2/A556EOLMGDZG2/A556EXXSGDZG2`
`XTC`	Philippines	Jul 20, 2026	+1 day	`A556EXXSGDZG2/A556EOLMGDZG2/A556EXXSGDZG2`
`CAU`	Caucasus	Jul 20, 2026	+1 day	`A556EXXSGDZG2/A556EOXEGDZG2/A556EXXSGDZG2`
`SER`	Russia	Jul 20, 2026	+1 day	`A556EXXSGDZG2/A556EOXEGDZG2/A556EXXSGDZG2`
`ARO`	Argentina	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`BVO`	Bolivia	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`CDR`	Dominican Republic	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`CGU`	Guatemala (Claro)	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`CHE`	Chile (Entel)	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`ZTA`	Brazil (Claro)	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`ZTM`	Brazil (TIM)	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`ZTO`	Brazil	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`ZVV`	Brazil (Vivo)	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`CHL`	Chile (Claro)	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`CHO`	Chile	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`CHT`	Chile (Movistar)	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`CHX`	Chile	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`COM`	Colombia (Claro)	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`CRC`	Costa Rica	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`CTI`	Argentina (Claro)	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`UFN`	Argentina (Movistar)	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`UPO`	Uruguay	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`UYO`	Uruguay	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`TCE`	Mexico (Telcel)	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`TGP`	Paraguay	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`TMM`	Myanmar	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`TPA`	Panama	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`PNT`	Panama	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`PSN`	Argentina (Personal)	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`SAM`	Oceania	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`DOR`	Dominican Republic	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`EBE`	Ecuador	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`ECO`	Ecuador	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`GLO`	Nigeria (Glo)	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`GTO`	Guatemala	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`IUS`	Mexico (AT&T)	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`MXO`	Mexico	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`PEO`	Peru	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`PET`	Peru (Movistar)	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`PGU`	Guatemala	Jul 21, 2026	+2 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`OPS`	Australia (Optus)	Jul 22, 2026	+3 days	`A556EXXSGDZG2/A556EOLMGDZG2/A556EXXSGDZG2`
`TEL`	Australia (Telstra)	Jul 22, 2026	+3 days	`A556EXXSGDZG2/A556EOLMGDZG2/A556EXXSGDZG2`
`VAU`	Australia (Vodafone)	Jul 22, 2026	+3 days	`A556EXXSGDZG2/A556EOLMGDZG2/A556EXXSGDZG2`
`XSA`	Australia	Jul 22, 2026	+3 days	`A556EXXSGDZG2/A556EOLMGDZG2/A556EXXSGDZG2`
`COB`	Colombia (Movistar)	Jul 22, 2026	+3 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`COL`	Colombia	Jul 22, 2026	+3 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`COO`	Colombia	Jul 22, 2026	+3 days	`A556EXXSGDZG2/A556EOWOGDZG2/A556EXXSGDZG2`
`ILO`	Israel	Jul 22, 2026	+3 days	`A556EXXSGDZG2/A556EOJMGDZG2/A556EXXSGDZG2`
`BKD`	Bangladesh	Jul 22, 2026	+3 days	`A556EXXSGDZG2/A556EODMGDZG2/A556EXXSGDZG2`
`BNG`	Belgium	Jul 22, 2026	+3 days	`A556EXXSGDZG2/A556EODMGDZG2/A556EXXSGDZG2`
`INS`	India	Jul 22, 2026	+3 days	`A556EXXSGDZG2/A556EODMGDZG2/A556EXXSGDZG2`
`NPB`	Nepal	Jul 22, 2026	+3 days	`A556EXXSGDZG2/A556EODMGDZG2/A556EXXSGDZG2`
`SLK`	Sri Lanka	Jul 22, 2026	+3 days	`A556EXXSGDZG2/A556EODMGDZG2/A556EXXSGDZG2`
`MM1`	Singapore (M1)	Jul 26, 2026	+7 days	`A556EXXSGDZG2/A556EOLMGDZG2/A556EXXSGDZG2`
`SIN`	Singapore (Singtel)	Jul 26, 2026	+7 days	`A556EXXSGDZG2/A556EOLMGDZG2/A556EXXSGDZG2`
`STH`	Singapore (StarHub)	Jul 26, 2026	+7 days	`A556EXXSGDZG2/A556EOLMGDZG2/A556EXXSGDZG2`
`XSP`	Singapore	Jul 26, 2026	+7 days	`A556EXXSGDZG2/A556EOLMGDZG2/A556EXXSGDZG2`

Download and release notes

samloader download -m SM-A556E -r INS -v A556EXXSGDZG2/A556EODMGDZG2/A556EXXSGDZG2

Samsung's release notes and security patch level for this update: SM-A556E / INS on doc.samsungmobile.com. What each part of the build number means: decode A556EXXSGDZG2.

A556EXXSGDZG2 – Galaxy A55 5G firmware

Rollout timeline by region

Download and release notes

`A556EXXSGDZG2` – Galaxy A55 5G firmware